Knowledge

Web annotation

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With a web annotation system, a user can add, modify or remove information from a Web resource without modifying the resource itself. The annotations can be thought of as a layer on top of the existing resource, and this annotation layer is usually visible to other users who share the same annotation
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Annotations can be considered an additional layer with respect to comments. Comments are published by the same publisher who hosts the original document. Annotations are added on top of that, but may eventually become comments which, in turn, may be integrated in a further version of the document
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A Firefox plugin created in 2004 that provided a publicly editable mediawiki page in the margin of any webpage. (It was later accessible in other browsers via a bookmarklet.) Common uses were note-taking and discussion about the website. On Google, the Wikalong margin provided a variety of useful
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n annotation is considered to be a set of connected resources, typically including a body and target, and conveys that the body is related to the target. The exact nature of this relationship changes according to the intention of the annotation, but the body is most frequently somehow "about" the
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target. (...) The (...) model supports additional functionality, enabling content to be embedded within the annotation, selecting arbitrary segments of resources, choosing the appropriate representation of a resource and providing styling hints to help clients render the annotation appropriately.
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Founded in 2003 and provided cloud bookmarks with optional descriptions (a form of annotation) of up to 1000 characters. It was rumoured that it would be shut down in 2010, but it was only actually finally shut down in 2017 when it was acquired by Pinboard, a competitor.
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The body can be a literal value or structured content (a URI). The target can be identified by an URI (e.g., fragment identifiers) and/or a selector that defines a domain-, resource- or application-specific access protocol, e.g., offset-based, XPath-based, etc.
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A system launched in 1999. It was targeted by a campaign called Say No to TV, led by independent web hosts which likened ThirdVoice to "Web graffiti." It was shut in April 2001 because it couldn't generate enough advertising revenue to stay in business.
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Perhaps the earliest web annotation system. Developed in 1997–98 by Ka-Ping Yee of the University of California. CritLink worked as an HTML "mediator", hence not requiring additional software or browser extensions but having limited support for modern
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Launched in 2007, dabbled in web page annotation as part of its broader mission. It was originally developed in Adobe Flash. It was acquired by Box.com in 2013 and the web annotation side of it was shut down two years later.
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Independently from Web Annotation, more specialized data models for representing annotations on the web have been developed, e.g., the NLP Interchange Format (NIF) for applications in language technology. In early 2020, the
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Many of these systems require software to be installed to enable some or all of the features below. This fact is only noted in footnotes if the software that is required is additional software provided by a third party.
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Technically, public annotations are possible via the "publish to HTML" feature of org mode -- but no method for notifications or discovery of public annotations written by others is currently known.
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Community Group "Linked Data for Language Technology" launched an initiative to harmonize these vocabularies and to develop a consolidated RDF vocabulary for linguistic annotations on the web.
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On Web Annotations: Promises and Pitfalls of Current Web Infrastructure. Venu Vasudevan and Mark Palmer, Proceedings of the 32nd Hawaii International Conference on System Sciences - 1999
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In February 2015, different features were announced, such as private group annotation, semantic tagging, moderation, etc. Web Annotation integration was discussed in 2014.
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The Web Annotation data model is also provided in machine-readable form as the Web Annotation ontology. Note that this ontology defines the Web Annotation namespace (
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Launched in 2005 with much publicity as a stick-it notes application for the web. A patent, funding and marketing didn't stop it from failing. Discontinued in 2010.
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Emacs-based; requires technical knowledge to set up; not as user-friendly as some other solutions; non-Latin characters allowed in notes but not in tags
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as a medium of artistic or social criticism, by allowing Web users to reinterpret, enrich or protest against institution or ideas that appear on the Web.
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Formerly knows as News Genius, launched in 2016. As of May 2022, the Chrome and Wordpress extensions are discontinued, and the bookmarklet provided on
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Web Annotation was standardized on February 23, 2017 with the release of three official Recommendations by the W3C Web Annotation Working Group:
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An AJAX based web annotation tool that allowed users to mark-up, highlight, draw, annotate, cache, sticky-note and finally share any website.
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Launched in 2009. A part of Google Toolbar that allowed users to write comments alongside any web page. It was discontinued in December 2011.
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Public annotations are only allowed for established users. Group tag dictionary feature to encourage tagging consistently within a group.
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and it has been used in this sense for the annotation tool INCEpTION, formerly WebAnno. This is a general feature of several tools for
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tips and shortcuts for searching. The project was discontinued in 2009 when the storage wiki went offline. It had been suffering from
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An early version of the Mosaic browser was tested with collaborative annotation feature in 1993 but never passed the test state.
1968:, Proceedings of WISE 2009, 10th International Conference on Web Information Systems Engineering, Poznan, Poland, October 2009 1976: 1965: 615: 152:
Robert Sanderson, Paolo Ciccarese, Benjamin Young (eds.), Web Annotation Data Model, W3C Recommendation 23 February 2017,
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Web Annotation supersedes other standardization initiatives for annotations on the web within the W3C, e.g., the earlier
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Launched in 2009. A multimedia, extensible tool for annotating web pages with widgets viewable by any other Blerp user.
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Can annotate PDF, ODF, .doc, .docx, images, as well as web pages (but only a limited number in the free version)
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Other, non-standardized fragment identifiers are in use, as well, e.g., within the NLP Interchange Format.
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These recommendations were accompanied by additional working group notes that describe their application:
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to rate a Web resource, such as by its usefulness, user-friendliness, suitability for viewing by minors.
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The impact of bookmarks and annotations on refinding information. ACM Hypertext Conference 2010: 29-34
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project that tried to establish a standard for web annotation. Annotea was conceived as part of the
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Hardy, Matthew; Masinter, Larry M.; Markovic, Dejan; Johnson, Duff; Bailey, Martin (March 2017).
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A Survey of Web Annotation Systems. Rachel M. Heck, Sarah M. Luebke, Chad H. Obermark. 1999.
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does not work. As of August 2022, it is not possible to log in and leave new annotations.
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developed for this purpose. The term can also refer to the creations of annotations on the
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Yee, Ka-Ping (2002). "CritLink: Advanced Hyperlinks Enable Public Annotation on the Web".
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Please help update this article to reflect recent events or newly available information.
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annotation (the element that serves to relate body and target of an annotation)
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target (the element being annotated, e.g., a web document or a part of it),
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Web Annotation can be used in conjunction with (or as an alternative to)
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that describe how to address elements within a web document by means of
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New ways of using Web annotations. Laurent Denoue, Laurence Vignollet.
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RFC 8118 (URI fragment identifiers for the application/pdf media type)
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to improve or adapt its contents by adding/removing material (like
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to quantify transient relationships between information fragments.
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Hausenblas, Michael; Wilde, Erik; Tennison, Jeni (January 2014).
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RFC 5147 (URI fragment identifiers for the text/plain media type)
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Ricardo Kawase, Eelco Herder, George Papadakis, Wolfgang Nejdl:
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Ricardo Kawase, George Papadakis, Eelco Herder, Wolfgang Nejdl:
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But local annotations can be exposed to a firefox browser using
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RFC 7111 (URI fragment identifiers for the text/csv media type)
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body (the content of the annotation, e.g., a string value), and
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Proceedings of JCDL '10, Joint Conference on Digital Libraries
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system. In such cases, the web annotation tool is a type of
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Media Fragments (for addressing components of media files)
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The basic data structures of Web Annotation (Fig. 1) are
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tool, e.g. to discuss the contents of a certain resource.
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Comparison of software saving Web pages for offline use
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Web annotation can be used for the following purposes:
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Annotation of named entities, linking with maps and
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implements/ exports/ imports Web Annotation standard
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to save, retain and synthesize selected information.
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Fig. 1. Basic view on the Web Annotation data model
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For Web-based text annotation systems, see 2045: 1994:In-Context Annotations for Refinding and Sharing 589:, developed by the Pelagios network, popular in 85: 1721:"Say NO To Third Voice! - WEBMASTERS UNITE!!" 1522:"Open Annotation RDFa using Hypothes.is JSON" 270:(for addressing components of XML documents) 1140: 2015:Recommendations (as of February 23, 2017): 1638: 1519: 137: 1937: 977: 907: 288: 235: 76:annotation in natural language processing 421:, also supports simple text annotations 173: 1546:"Implementations - Web Annotation Wiki" 154:https://www.w3.org/TR/annotation-model/ 2046: 1641:"group annotation server guinea pigs?" 1407:"Getting Started: Storing Annotations" 983: 855:packages also support web annotations 502:No, but listed on Web Annotation wiki 1274:"Linking – SVG 1.1 (Second Edition)" 943: 602: 294:Comparison of web annotation systems 15: 1930:Association for Computing Machinery 1663: 1479:"Hypothesis API documentation (v1)" 1048:"Embedding Web Annotations in HTML" 599:Discontinued web annotation systems 13: 1913: 1802:Farewell Fleck.com, "The Next Web" 1455:"Annotorious & Web Annotation" 986:"Annotation Is Now a Web Standard" 14: 2075: 2006: 1302:"Media Fragments URI 1.0 (Basic)" 1090:"Open Annotation Community Group" 984:Whaley, Dan (February 24, 2017). 842:Comparison of notetaking software 232:project discontinued after 2003. 204:Embedding Web Annotations in HTML 2040:, W3C's interactive illustration 2013:W3C Web Annotation Working Group 1231:"The application/PDF Media Type" 606: 403:Yes, via Google Firebase plugin 142:In the Web Annotation standard, 20: 1885: 1859: 1833: 1807: 1795: 1777: 1765: 1749: 1731: 1713: 1699: 1657: 1639:Andreessen, Marc (1993-05-31). 1632: 1608: 1584: 1571: 1562: 1538: 1513: 1495: 1471: 1447: 1423: 1399: 1375: 1363: 1343: 1322: 1308: 1294: 1280: 1266: 1222: 1178: 1134: 1110: 1096: 1082: 1068: 1054: 221:. This is the abbreviation for 2002:(Selected Papers) 2010: 85-100 1141:Wilde, E.; Duerst, M. (2008). 1040: 1026: 1012: 998: 963: 937: 923: 901: 63:or parts of them, or a set of 1: 1616:"Welcome to Pelagios Network" 1351:"Ld4lt/Linguistic-annotation" 946:"Web Annotation Architecture" 912:. Inception-project.github.io 894: 853:reference management software 658:Never passed the test state 7: 2038:Web Annotation Architecture 1076:"Web Annotation Vocabulary" 1020:"Web Annotation Vocabulary" 1006:"Web Annotation Data Model" 835: 86:Annotation of web resources 10: 2080: 2026:Web Annotation Vocabulary 2021:Web Annotation Data Model 1739:"The Web's New Graffiti?" 1520:bigbluehat (2014-10-15). 1034:"Web Annotation Protocol" 214:https://www.w3.org/ns/oa# 193:Web Annotation Vocabulary 190:Web Annotation Data Model 59:of web resources such as 29:This article needs to be 1819:Free Software Foundation 908:Inception (2022-07-30). 493:Chrome, via.hypothes.is 2031:Web Annotation Protocol 1948:10.1145/1816123.1816125 1785:"SEO – SEO-Optimierung" 1371:A.nnotate notifications 196:Web Annotation Protocol 138:Web Annotation standard 1922:Van de Sompel, Herbert 1772:Wikalong Firefox Addon 1756:Third Voice Trails Off 1254:Cite journal requires 1210:Cite journal requires 1166:Cite journal requires 1062:"Selectors and States" 289:Web Annotation Systems 236:Related specifications 179: 158: 1745:on November 21, 2001. 1596:recogito.pelagios.org 1435:annotorious.github.io 1431:"Annotorious | About" 1387:annotorious.github.io 177: 144: 1288:"XPointer Framework" 825:the official website 819:Genius Web Annotator 620:adding missing items 264:fragment identifiers 242:fragment identifiers 207:Selectors and States 55:can refer to online 1920:Sanderson, Robert; 879:Threaded discussion 864:Online deliberation 329:Viewing annotations 311:Private group notes 1459:recogito.github.io 1411:recogito.github.io 1332:. Site.nlp2rdf.org 847:Social bookmarking 671:-driven websites. 647:Date Discontinued 618:; you can help by 591:Digital Humanities 180: 80:in the philologies 1932:. pp. 1–10. 1727:on April 5, 2001. 1707:"Annotea project" 1687:Missing or empty 1118:"Annotea project" 833: 832: 636: 635: 596: 595: 513:(with extensions) 457:No (proprietary) 377:No (proprietary) 305:Annotation system 50: 49: 2071: 1961: 1941: 1907: 1906: 1904: 1903: 1889: 1883: 1882: 1880: 1878: 1863: 1857: 1856: 1854: 1852: 1837: 1831: 1830: 1828: 1826: 1815:"Comment system" 1811: 1805: 1799: 1793: 1792: 1789:www.wikalong.org 1781: 1775: 1769: 1763: 1753: 1747: 1746: 1741:. Archived from 1735: 1729: 1728: 1723:. 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Index

annotations
web pages
W3C
standards
World Wide Web
annotation in natural language processing
in the philologies
social software
Text annotation
wiki
collaborative
https://www.w3.org/TR/annotation-model/

https://www.w3.org/ns/oa#
Annotea
fragment identifiers
URIs
SVG
XPointer
W3C
A.nnotate
OpenSeadragon
Diigo
Hypothes.is
Org-mode
knowledge graphs
Digital Humanities
incomplete
adding missing items
JavaScript

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