The annotation is essentially the association of some metadata with some other object, called target data. The target data can be everything, starting with a table in a database, a file or document, or virtually any type of information. The annotation also has a wide range of meanings, so that it can be either a link to another table in a database or another database, a comment for a document, or the classical sticky note that is put on the fridge's door. The annotations a very important when working with great amount of data, the scientists and the
While looking at a potential formulation of a worldwide Web of semantic declarations, the standard of modest style needs that it be based on ordinary model of immense generalization. Simply when the ordinary model is common can any potential application be mapped onto the type. The universal type is the Resource Description Framework.
Being common, this is very easy. Being easy there is not anything a lot which can be performed with the model without layering lots of belongings on top. An essential model restrains just the idea of
Annotation is the process of associating metadata with data. This article presents a Web services API intended as an industry standard for client-server systems designed to facilitate the structured annotation of heterogeneous data. The author presents the goals of the Annotation Web services API and then discusses how those goals motivate the data model around which the API operates. The author also discusses 29 methods that comprise the API including two examples of possible sequences of API calls to create and retrieve annotations.
The Annotation
Members of the OASIS ebXML Registry Technical Committee have approved a September 2006 Committee Draft version of "ebXML Registry Profile for Web Ontology Language (OWL) Version 1.5" as a new Committee Specification. The document defines the ebXML Registry profile for publishing, management, discovery and reuse of OWL Lite Ontologies.
The ebXML Registry holds the metadata for the RegistryObjects and the documents pointed at by the RegistryObjects reside in an ebXML repository. The basic semantic mechanisms of ebXML Registry are classification
RDF is a general model and representing a piece of information in RDF/XML can be done in many lexical/syntactic/structural/ontological ways. Unfortunately, these different representations often cannot be automatically compared with each other and therefore retrieved, merged or reused. We cannot expect the metadata providers to follow the same schemas and this would not be prevent incomparable syntactic/structural variations. Metadata providers (including schema creators) need to follow conventions. Here are some propositions.
1. Some Lexical
*
Resource Description Framework (RDF). W3C Main Page
*
RDF FAQ Document, from W3C
*
W3C Metadata Activity Statement. Explains W3C's plans for RDF and metadata in detail. Work on Metadata is part of W3C's Technology and Society Domain.
*
RDF Interest Group. "The RDF Interest Group was established in August 1999 as an open forum for W3C Members and non-Members to discuss issues relating to W3C's Resource Description Framework." See the RDF IG Charter and the archives of the RDF-Interest mailing list
For this chapter we will continue using the Dublin Core Element Set and explore some of the ways you can arrange the metadata.
XML Syntax
The XML document can be formatted as shown above, however, the following is also acceptable:
<? xml version="1.0" ?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:DC="http://purl.oclc.org/DC/">
<Description about="http://uri-of-some-document" >
<DC:Title>Some sample Document</DC:Title>
<DC:Creator>John Smith</DC:Creator>
<DC:Subject>some,
The Resource Description Framework (RDF) is a W3C standard for describing resources on the Web.
RDF is a framework for describing Web resources, such as the title, author, modification date, content, and copyright information of a Web page.
Resource Description Framework (RDF)
RDF is the Resource Description Framework proposed by Netscape as an open industry standard for describing how metadata for content is defined in web documents. This metadata is descriptive information about the structure and content of information in a document. This
RSS/XML