TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318

Closed
Closed
TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
Assignees
zeahmed
Labels
bugSomething isn't working

Description

@helloguo
helloguo
opened on Jun 6, 2018

System information

  • OS Windows 10:
  • .NET Version 2.1.300-rc1-008673:

Issue

  • What did you do?

I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.

 public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}
  • What happened?

Error message:

Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.

  • What did you expect?

I can use _ in variable names, which are part of Input fed to TextLoader.

Source code / logs

Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.

Metadata

Metadata

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Labels

bugSomething isn't working

Type

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    , '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" + '

    Skip to content
    TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
    Closed
    Closed
    TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
    Assignees
    zeahmed
    Labels
    bugSomething isn't working
    Description
    @helloguo
    helloguo
    opened on Jun 6, 2018
    System information
    • OS Windows 10:
    • .NET Version 2.1.300-rc1-008673:
    Issue
    • What did you do?
    I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
     public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

    • What happened?
    Error message:
    Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

    After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
    • What did you expect?
    I can use _ in variable names, which are part of Input fed to TextLoader.
    Source code / logs
    Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
    Metadata
    Metadata
    Assignees
    Labels
    bugSomething isn't working
    Type
    No type
    Projects
    No projects
      Milestone
      No milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, '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
      TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
      Closed
      Closed
      TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
      Assignees
      zeahmed
      Labels
      bugSomething isn't working
      Description
      @helloguo
      helloguo
      opened on Jun 6, 2018
      System information
      • OS Windows 10:
      • .NET Version 2.1.300-rc1-008673:
      Issue
      • What did you do?
      I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
       public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

      • What happened?
      Error message:
      Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

      After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
      • What did you expect?
      I can use _ in variable names, which are part of Input fed to TextLoader.
      Source code / logs
      Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
      Metadata
      Metadata
      Assignees
      Labels
      bugSomething isn't working
      Type
      No type
      Projects
      No projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, '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
        TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
        Closed
        Closed
        TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
        Assignees
        zeahmed
        Labels
        bugSomething isn't working
        Description
        @helloguo
        helloguo
        opened on Jun 6, 2018
        System information
        • OS Windows 10:
        • .NET Version 2.1.300-rc1-008673:
        Issue
        • What did you do?
        I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
         public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

        • What happened?
        Error message:
        Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

        After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
        • What did you expect?
        I can use _ in variable names, which are part of Input fed to TextLoader.
        Source code / logs
        Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
        Metadata
        Metadata
        Assignees
        Labels
        bugSomething isn't working
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, '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
          TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
          Closed
          Closed
          TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
          Assignees
          zeahmed
          Labels
          bugSomething isn't working
          Description
          @helloguo
          helloguo
          opened on Jun 6, 2018
          System information
          • OS Windows 10:
          • .NET Version 2.1.300-rc1-008673:
          Issue
          • What did you do?
          I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
           public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

          • What happened?
          Error message:
          Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

          After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
          • What did you expect?
          I can use _ in variable names, which are part of Input fed to TextLoader.
          Source code / logs
          Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
          Metadata
          Metadata
          Assignees
          Labels
          bugSomething isn't working
          Type
          No type
          Projects
          No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, '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
            TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
            Closed
            Closed
            TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
            Assignees
            zeahmed
            Labels
            bugSomething isn't working
            Description
            @helloguo
            helloguo
            opened on Jun 6, 2018
            System information
            • OS Windows 10:
            • .NET Version 2.1.300-rc1-008673:
            Issue
            • What did you do?
            I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
             public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

            • What happened?
            Error message:
            Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

            After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
            • What did you expect?
            I can use _ in variable names, which are part of Input fed to TextLoader.
            Source code / logs
            Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
            Metadata
            Metadata
            Assignees
            Labels
            bugSomething isn't working
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, '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
              TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
              Closed
              Closed
              TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
              Assignees
              zeahmed
              Labels
              bugSomething isn't working
              Description
              @helloguo
              helloguo
              opened on Jun 6, 2018
              System information
              • OS Windows 10:
              • .NET Version 2.1.300-rc1-008673:
              Issue
              • What did you do?
              I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
               public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

              • What happened?
              Error message:
              Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

              After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
              • What did you expect?
              I can use _ in variable names, which are part of Input fed to TextLoader.
              Source code / logs
              Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
              Metadata
              Metadata
              Assignees
              Labels
              bugSomething isn't working
              Type
              No type
              Projects
              No projects
                Milestone
                No milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, '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); }
})();
})();

                Skip to content
                TextLoader().CreateFrom() Unhandled Exception for version 0.2.0 #318
                Closed
                Closed
                TextLoader().CreateFrom() Unhandled Exception for version 0.2.0#318
                Assignees
                zeahmed
                Labels
                bugSomething isn't working
                Description
                @helloguo
                helloguo
                opened on Jun 6, 2018
                System information
                • OS Windows 10:
                • .NET Version 2.1.300-rc1-008673:
                Issue
                • What did you do?
                I move my code from ML.NET version 0.1.0 to ML.NET version 0.2.0. I have a data structure FlightData looks like following. Then I use pipeline.Add(new TextLoader(trainingDataSet).CreateFrom<FlightData>(useHeader: true, separator: ',', allowQuotedStrings:true)); to load the data.
                 public class FlightData
{
[Column(ordinal: "0")]
public float QUARTER;
[Column(ordinal: "1")]
public float MONTH;
[Column(ordinal: "2")]
public float DAY_OF_MONTH;
[Column(ordinal: "3")]
....
}

                • What happened?
                Error message:
                Unhandled Exception: System.InvalidOperationException: DAY_OF_MONTH is not alphanumeric.
at Microsoft.ML.Data.TextLoader.CreateFrom[TInput](Boolean useHeader, Char separator, Boolean allowQuotedStrings, Boolean supportSparse, Boolean trimWhitespace)

                After looking at the error msg and ML.NET source code https://github.com/dotnet/machinelearning/blob/master/src/Microsoft.ML/Data/TextLoader.cs#L87, I change DAY_OF_MONTH to DAYOFMONTH. Then the error disappears. But it's common to use _ in the variable names.
                • What did you expect?
                I can use _ in variable names, which are part of Input fed to TextLoader.
                Source code / logs
                Please paste or attach the code or logs or traces that would be helpful to diagnose the issue you are reporting.
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