metadata Metadata (or metainformation) is "data that provides information about other data", but not the content of the data itself, such as the text of a message or the image itself. There are many distinct types of metadata, including: * Descriptive ...

, Annotea was designed as an RDF standard sponsored by the

W3C The World Wide Web Consortium (W3C) is the main international standards organization for the World Wide Web. Founded in 1994 by Tim Berners-Lee, the consortium is made up of member organizations that maintain full-time staff working together in ...

to enhance document-based collaboration via shared document metadata based on tags,

bookmarks A bookmark is used to keep one's place in a printed work. It can also refer to: * Bookmark (digital), a pointer in a web browser and other software * ''Bookmarks'' (album), 2013 album by Five for Fighting * ''Bookmarks'' (magazine), an American ...

, and other

annotation An annotation is extra information associated with a particular point in a document or other piece of information. It can be a note that includes a comment or explanation. Annotations are sometimes presented Marginalia, in the margin of book page ...

s. In this case document metadata includes: * Keywords * Comments * Notes * Explanations * Errors * Corrections In general, Annotea associates text strings to a

web document A web page (or webpage) is a Web document that is accessed in a web browser. A website typically consists of many web pages linked together under a common domain name. The term "web page" is therefore a metaphor of paper pages bound together in ...

or selected parts of a web document without actually needing to modify the original document. Users that access any web documents can also load the metadata associated with it from a selected annotation server (or groups of servers) and see a peer group's comments on the document. Similarly shared metadata tags can be attached to web documents to help in future retrieval. Annotea is an extensible standard and is designed to work with other W3C standards when possible. For instance, Annotea uses an

RDF Schema RDF Schema (Resource Description Framework Schema, variously abbreviated as RDFS, , RDF-S, or RDF/S) is a set of classes with certain properties using the RDF extensible knowledge representation data model, providing basic elements for the descr ...

for describing annotations as metadata and

XPointer XPointer is a system for addressing components of XML-based Internet media. It is divided among four specifications: a " framework" that forms the basis for identifying XML fragments, a positional element addressing scheme, a scheme for namespace ...

for locating the annotations in the annotated document. Similarly a bookmark schema describes the bookmark and topic metadata. Annotea is part of the W3C

Semantic Web The Semantic Web, sometimes known as Web 3.0, is an extension of the World Wide Web through standards set by the World Wide Web Consortium (W3C). The goal of the Semantic Web is to make Internet data machine-readable. To enable the encoding o ...

efforts. An example implementation of Annotea is W3C's Amaya editor/browser. The current Amaya user interface for annotations is presented in the Amaya documentation. Other projects consists of Plugins for

Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements curr ...

/Mozilla or Annotatio Client which interacts with most browsers per JavaScript. Active development of Annotea seems to have been discontinued after 2003, as a W3C standard for annotation of documents on the webs, it is superseded by

Web Annotation Web annotation can refer to online annotations of web resources such as web pages or parts of them, or a set of World Wide Web Consortium, W3C W3C recommendation, standards developed for this purpose. The term can also refer to the creations of an ...

References

{{Reflist

External links

W3C Annotea web site

Annotea.org web site

Annotatio - Java implementation of Server and Client

Annozilla - Plugin for Firefox/Mozilla
Metadata

See also

References

External links