Cleanup SentencePiece tokenizer#7427

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tarekgh merged 1 commit into from
Mar 20, 2025
Merged

Cleanup SentencePiece tokenizer #7427

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61 changes: 0 additions & 61 deletions src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
specialTokens);
}

internal SentencePieceBaseModel(SentencePieceOptions options)
{
if (options is null)
{
throw new ArgumentNullException(nameof(options));
}

if (options.Vocabulary is null)
{
throw new ArgumentNullException(nameof(options.Vocabulary));
}

if (options.BeginningOfSentenceToken is null)
{
throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
}

if (options.EndOfSentenceToken is null)
{
throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
}

if (options.UnknownToken is null)
{
throw new ArgumentNullException(nameof(options.UnknownToken));
}

AddBeginningOfSentence = options.AddBeginningOfSentence;
AddEndOfSentence = options.AddEndOfSentence;
BeginningOfSentenceToken = options.BeginningOfSentenceToken;
EndOfSentenceToken = options.EndOfSentenceToken;
UnknownToken = options.UnknownToken;
AddDummyPrefix = options.AddDummyPrefix;
EscapeWhiteSpaces = options.EscapeWhiteSpaces;
TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
ByteFallback = options.ByteFallback;
SpecialTokens = options.SpecialTokens;

if (SpecialTokens is not null && SpecialTokens.Count > 0)
{
InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
SpecialTokensReverse = new Dictionary<int, string>();

foreach (var item in SpecialTokens)
{
InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
SpecialTokensReverse.Add(item.Value, item.Key);
}

// We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
}

Normalizer = new SentencePieceNormalizer(
options.PrecompiledNormalizationData,
options.RemoveExtraWhiteSpaces,
options.AddDummyPrefix, options.EscapeWhiteSpaces,
options.TreatWhitespaceAsSuffix,
SpecialTokens);
}

internal Regex? SpecialTokensRegex { get; }

internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down
46 changes: 0 additions & 46 deletions src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
}

internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
{
if (options.PrecompiledNormalizationData is not null)
{
throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
}

Debug.Assert(options.Vocabulary is not null);

int id = 0;
foreach (var item in options.Vocabulary!)
{
_vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
_vocabReverse.Add(id++, item.Token);
}

if (options.ByteFallback)
{
if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
{
throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
}

ByteCodeToIdOffset = value.Id;
OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
}

if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
{
throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
}
UnknownId = unknownToken.Id;

if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
{
throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
}
BeginningOfSentenceId = beginOfSentenceToken.Id;

if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
{
throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
}
EndOfSentenceId = endOfSentenceToken.Id;
}

public override IReadOnlyDictionary<string, int> Vocabulary
{
get
Expand Down
118 changes: 0 additions & 118 deletions src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs
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24 changes: 0 additions & 24 deletions src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
};
}

internal SentencePieceTokenizer(SentencePieceOptions options)
{
_model = options.ModelType switch
{
SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
_ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
};
}

/// <summary>
/// The special tokens.
/// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
}

/// <summary>
/// Creates an instance of SentencePieceTokenizer.
/// </summary>
/// <param name="options">The options to use for the sentence piece tokenizer.</param>
public static SentencePieceTokenizer Create(SentencePieceOptions options)
{
if (options is null)
{
throw new ArgumentNullException(nameof(options));
}

return new SentencePieceTokenizer(options);
}
}
}
66 changes: 8 additions & 58 deletions src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
{
_vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
{
throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
}

_vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

_minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
}
}

public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
{
_vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
// _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

// 250_000 using big number to avoid reallocation during the initialization.
List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

_minScore = float.MaxValue;
_maxScore = float.MinValue;

int id = 0;
foreach ((string Token, float Score) item in options.Vocabulary!)
{
_vocab.Add(item.Token, id++);
vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
_minScore = Math.Min(_minScore, item.Score);
_maxScore = Math.Max(_maxScore, item.Score);
}

_vocabReverse = vocabReverse.ToArray();

if (options.ByteFallback)
{
if (!_vocab.TryGetValue("<0x00>", out id))
{
throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
}

ByteCodeToIdOffset = id;
OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
}

_trie = new DoubleArrayTrie(_vocab);

_vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
_vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
{
throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
}
UnknownId = unknownToken;

if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
{
throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
}
BeginningOfSentenceId = beginOfSentenceToken;

if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
{
throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
}
EndOfSentenceId = endOfSentenceToken;
}

public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

public int MaxIdByteFallbackId { get; }
Expand Down
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Cleanup SentencePiece tokenizer#7427

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 Merged

tarekgh
merged 1 commit into

from

Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Cleanup SentencePiece tokenizer#7427

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 Merged

tarekgh
merged 1 commit into

from

Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Cleanup SentencePiece tokenizer#7427

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 Merged

tarekgh
merged 1 commit into

from

Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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This file was deleted.


24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
Cleanup SentencePiece tokenizer#7427

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
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 Merged

tarekgh
merged 1 commit into

from

Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Cleanup SentencePiece tokenizer#7427

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 Merged

tarekgh
merged 1 commit into

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Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Cleanup SentencePiece tokenizer#7427

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 Merged

tarekgh
merged 1 commit into

from

Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Cleanup SentencePiece tokenizer#7427

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 Merged

tarekgh
merged 1 commit into

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Mar 20, 2025
 Merged


Cleanup SentencePiece tokenizer
#7427
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61 changes: 0 additions & 61 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBaseModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -59,67 +59,6 @@ internal SentencePieceBaseModel(ModelProto modelProto, bool addBos = false, bool
 specialTokens);
 }

 internal SentencePieceBaseModel(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 if (options.Vocabulary is null)
 {
 throw new ArgumentNullException(nameof(options.Vocabulary));
 }

 if (options.BeginningOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.BeginningOfSentenceToken));
 }

 if (options.EndOfSentenceToken is null)
 {
 throw new ArgumentNullException(nameof(options.EndOfSentenceToken));
 }

 if (options.UnknownToken is null)
 {
 throw new ArgumentNullException(nameof(options.UnknownToken));
 }

 AddBeginningOfSentence = options.AddBeginningOfSentence;
 AddEndOfSentence = options.AddEndOfSentence;
 BeginningOfSentenceToken = options.BeginningOfSentenceToken;
 EndOfSentenceToken = options.EndOfSentenceToken;
 UnknownToken = options.UnknownToken;
 AddDummyPrefix = options.AddDummyPrefix;
 EscapeWhiteSpaces = options.EscapeWhiteSpaces;
 TreatWhitespaceAsSuffix = options.TreatWhitespaceAsSuffix;
 ByteFallback = options.ByteFallback;
 SpecialTokens = options.SpecialTokens;

 if (SpecialTokens is not null && SpecialTokens.Count > 0)
 {
 InternalSpecialTokens = new Dictionary<StringSpanOrdinalKey, int>();
 SpecialTokensReverse = new Dictionary<int, string>();

 foreach (var item in SpecialTokens)
 {
 InternalSpecialTokens.Add(new StringSpanOrdinalKey(item.Key), item.Value);
 SpecialTokensReverse.Add(item.Value, item.Key);
 }

 // We create this Regex object without a timeout, as we expect the match operation to complete in O(N) time complexity. Note that `specialTokens` are treated as constants after the tokenizer is created.
 SpecialTokensRegex = new Regex(string.Join("|", SpecialTokens.Keys.Select(s => Regex.Escape(s))), RegexOptions.Compiled);
 }

 Normalizer = new SentencePieceNormalizer(
 options.PrecompiledNormalizationData,
 options.RemoveExtraWhiteSpaces,
 options.AddDummyPrefix, options.EscapeWhiteSpaces,
 options.TreatWhitespaceAsSuffix,
 SpecialTokens);
 }

 internal Regex? SpecialTokensRegex { get; }

 internal Dictionary<StringSpanOrdinalKey, int>? InternalSpecialTokens { get; }
Expand Down

46 changes: 0 additions & 46 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceBpeModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -41,52 +41,6 @@ internal SentencePieceBpeModel(ModelProto modelProto, bool addBos, bool addEos,
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 internal SentencePieceBpeModel(SentencePieceOptions options) : base(options)
 {
 if (options.PrecompiledNormalizationData is not null)
 {
 throw new NotSupportedException("Normalization data is not supported for SentencePieceBpeModel.");
 }

 Debug.Assert(options.Vocabulary is not null);

 int id = 0;
 foreach (var item in options.Vocabulary!)
 {
 _vocab.Add(new StringSpanOrdinalKey(item.Token), (id, item.Score, (byte)ModelProto.Types.SentencePiece.Types.Type.Normal));
 _vocabReverse.Add(id++, item.Token);
 }

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out (int Id, float Score, byte Type) value))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = value.Id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 }

 if (!_vocab.TryGetValue(options.UnknownToken, out (int Id, float Score, byte Type) unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken.Id;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out (int Id, float Score, byte Type) beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken.Id;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out (int Id, float Score, byte Type) endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken.Id;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary
 {
 get
Expand Down

118 changes: 0 additions & 118 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceOptions.cs

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24 changes: 0 additions & 24 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceTokenizer.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -30,16 +30,6 @@ internal SentencePieceTokenizer(ModelProto modelProto, bool addBos, bool addEos,
 };
 }

 internal SentencePieceTokenizer(SentencePieceOptions options)
 {
 _model = options.ModelType switch
 {
 SentencePieceModelType.Bpe => new SentencePieceBpeModel(options),
 SentencePieceModelType.Unigram => new SentencePieceUnigramModel(options),
 _ => throw new ArgumentException($"The model type '{options.ModelType}' is not supported.", nameof(options.ModelType))
 };
 }

 /// <summary>
 /// The special tokens.
 /// </summary>
Expand DownExpand Up@@ -467,19 +457,5 @@ public static SentencePieceTokenizer Create(

 return new SentencePieceTokenizer(modelProto, addBeginOfSentence, addEndOfSentence, specialTokens);
 }

 /// <summary>
 /// Creates an instance of SentencePieceTokenizer.
 /// </summary>
 /// <param name="options">The options to use for the sentence piece tokenizer.</param>
 public static SentencePieceTokenizer Create(SentencePieceOptions options)
 {
 if (options is null)
 {
 throw new ArgumentNullException(nameof(options));
 }

 return new SentencePieceTokenizer(options);
 }
 }
}

66 changes: 8 additions & 58 deletions
src/Microsoft.ML.Tokenizers/Model/SentencePieceUnigramModel.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -27,6 +27,14 @@ internal sealed class SentencePieceUnigramModel : SentencePieceBaseModel
 public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos, IReadOnlyDictionary<string, int>? specialTokens = null) : base(modelProto, addBos, addEos, specialTokens)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);

 if (modelProto.TrainerSpec.BosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.EosId >= modelProto.Pieces.Count ||
 modelProto.TrainerSpec.UnkId >= modelProto.Pieces.Count)
 {
 throw new ArgumentException("The BOS, EOS, or UNK token is not present in the vocabulary.");
 }

 _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[modelProto.Pieces.Count];

 _minScore = float.MaxValue;
Expand DownExpand Up@@ -85,64 +93,6 @@ public SentencePieceUnigramModel(ModelProto modelProto, bool addBos, bool addEos
 }
 }

 public SentencePieceUnigramModel(SentencePieceOptions options) : base(options)
 {
 _vocab = new SortedDictionary<string, int>(OrdinalUtf8StringComparer.Instance);
 // _vocabReverse = new (string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)[];

 // 250_000 using big number to avoid reallocation during the initialization.
 List<(string Piece, float Score, ModelProto.Types.SentencePiece.Types.Type Type)> vocabReverse = new(250_000);

 _minScore = float.MaxValue;
 _maxScore = float.MinValue;

 int id = 0;
 foreach ((string Token, float Score) item in options.Vocabulary!)
 {
 _vocab.Add(item.Token, id++);
 vocabReverse.Add((item.Token, item.Score, ModelProto.Types.SentencePiece.Types.Type.Normal));
 _minScore = Math.Min(_minScore, item.Score);
 _maxScore = Math.Max(_maxScore, item.Score);
 }

 _vocabReverse = vocabReverse.ToArray();

 if (options.ByteFallback)
 {
 if (!_vocab.TryGetValue("<0x00>", out id))
 {
 throw new ArgumentException("'ByteFallback' is enabled but the vocabulary must include a special token for each byte value (0-255) in the format <0xNN>, where NN represents the byte's hexadecimal value.");
 }

 ByteCodeToIdOffset = id;
 OneByteUtf8EncodingMaxId = ByteCodeToIdOffset + 0x7F; // 0x7F is the maximum value of the one byte UTF-8 character.
 MaxIdByteFallbackId = ByteCodeToIdOffset + 0xFF; // from <0x00> to <0xFF>.
 }

 _trie = new DoubleArrayTrie(_vocab);

 _vocabReverse[BeginningOfSentenceId] = (BeginningOfSentenceToken, 0f, 0);
 _vocabReverse[EndOfSentenceId] = (EndOfSentenceToken, 0f, 0);

 if (!_vocab.TryGetValue(options.UnknownToken, out int unknownToken))
 {
 throw new ArgumentException($"The vocabulary must include the unknown token '{options.UnknownToken}'.");
 }
 UnknownId = unknownToken;

 if (!_vocab.TryGetValue(options.BeginningOfSentenceToken, out int beginOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the beginning of sentence token '{options.BeginningOfSentenceToken}'.");
 }
 BeginningOfSentenceId = beginOfSentenceToken;

 if (!_vocab.TryGetValue(options.EndOfSentenceToken, out int endOfSentenceToken))
 {
 throw new ArgumentException($"The vocabulary must include the end of sentence token '{options.EndOfSentenceToken}'.");
 }
 EndOfSentenceId = endOfSentenceToken;
 }

 public override IReadOnlyDictionary<string, int> Vocabulary => new ReadOnlyDictionary<string, int>(_vocab);

 public int MaxIdByteFallbackId { get; }
Expand Down
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