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Yin Qu (屈垠) edited this page Feb 23, 2016 · 16 revisions

The web is a heterogeneous and interconnected space of hypermedia. User tasks often require multiple metadata types and information sources. BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend.

The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world! Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language

For a complete specification of the meta-metadata language, see here.

Tools

These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
Add a custom footer
Add a custom sidebar

Clone this wiki locally

, '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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Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
 Add a custom footer

 Add a custom sidebar

Clone this wiki locally

, '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
Home
Jump to bottomEditNew page

Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
 Add a custom footer

 Add a custom sidebar

Clone this wiki locally

, '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
Home
Jump to bottomEditNew page

Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
 Add a custom footer

 Add a custom sidebar

Clone this wiki locally

, '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
Home
Jump to bottomEditNew page

Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
 Add a custom footer

 Add a custom sidebar

Clone this wiki locally

, '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
Home
Jump to bottomEditNew page

Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
 Add a custom footer

 Add a custom sidebar

Clone this wiki locally

, '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
Home
Jump to bottomEditNew page

Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
 Add a custom footer

 Add a custom sidebar

Clone this wiki locally

, '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
Home
Jump to bottomEditNew page

Yin Qu (屈垠) edited this page Feb 23, 2016
·
16 revisions
The web is a heterogeneous and interconnected space of hypermedia.
User tasks often require multiple metadata types and information sources.
BigSemantics addresses this heterogeneity by providing a repository of meta-metadata wrappers supporting a wide range of types and sources, and a polymorphic type system that maximizes reuse.

The repository includes wrappers ranging from everyday services such as Amazon Product, Trip Advisor, and Google Books, to professional digital libraries such as the ACM Digital Library and IEEE Xplore, as well as movies, games, blog posts, and so on. In the repository, wrappers written in the meta-metadata language
are organized by inheritance, in a hierarchical type system, making it easy to reuse and extend. 
The repository is distributed with BigSemantics and is also hosted on GitHub.

It is possible that you want to work with semantics from a web site but BigSemantics has not yet provided support for that site. Don't worry, one of the advantages of using BigSemantics is that you can author your own wrapper and then be able to work with that site!

This section will show you how to author your own wrapper for an unsupported web site. First, you need to set up a development environment. Then, you will learn about the in-and-outs of wrappers: defining data structures, extracting semantics, and attaching presentation semantics and semantic actions. The Wrapper Dev Assist tool can help you handle some details.

Tutorials

Don't forget to use Pull Requests to share your wrappers to the world!
Please refer to the [wiki] (https://github.com/ecologylab/BigSemantics/wiki) for support.

Meta-Metadata Language
For a complete specification of the meta-metadata language, see here.

Tools
These tools are not necessary but we have found them helpful in authoring meta-metadata. They help when locating information in a page's HTML and forming XPath expressions:

  • If you use Google Chrome, we recommend using its built-in Developer Tools (accessible from menu).
    • For XPath authoring, we recommend using $x("XPATH-EXPRESSION-HERE") in its JavaScript console, or the XPath Helper extension.
  • If you use Firefox, we recommend the Firebug add-on to help identify the parts of the HTML code which contain the information you need.
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