SKOS Simple Knowledge Organization System - home page SKOS is an area of work developing specifications and standards to support the use of knowledge organization systems (KOS) such as thesauri, classification schemes, subject heading lists and taxonomies within the framework of the Semantic Web ... [read more] Alignment between SKOS and new ISO 25964 thesaurus standard (2012-12-13) ISO 25964-1, published in 2011, replaced the previous thesaurus standards ISO 2788 and ISO 5964 (both now withdrawn). From Chaos, Order: SKOS Recommendation Helps Organize Knowledge (2009-08-18) Today W3C announces a new standard that builds a bridge between the world of knowledge organization systems - including thesauri, classifications, subject headings, taxonomies, and folksonomies - and the linked data community, bringing benefits to both. Call for Review: SKOS Reference Proposed Recommendation (2009-06-15) The Semantic Web Deployment Working Group has published the Proposed Recommendation of SKOS Simple Knowledge Organization System Reference.
OWL Web Ontology Language Overview W3C Recommendation 10 February 2004 New Version Available: OWL 2 (Document Status Update, 12 November 2009) The OWL Working Group has produced a W3C Recommendation for a new version of OWL which adds features to this 2004 version, while remaining compatible. Please see OWL 2 Document Overview for an introduction to OWL 2 and a guide to the OWL 2 document set. This version: Latest version: Previous version: Editors: Deborah L. Frank van Harmelen (Vrije Universiteit, Amsterdam) Frank.van.Harmelen@cs.vu.nl Please refer to the errata for this document, which may include some normative corrections. See also translations. Copyright © 2004 W3C® (MIT, ERCIM, Keio), All Rights Reserved. Abstract The OWL Web Ontology Language is designed for use by applications that need to process the content of information instead of just presenting information to humans. 1. 2. 3.
Specification | UDDI The current list of specifications advanced by the OASIS UDDI Specification Technical Committee includes: The UDDI Version 2 specifications, UDDI Version 3 specification and the Schema Centric XML Canonicalization Specification represent contributed material. Notes and Disclaimers are provided on each of these specification documents. UDDI Version History Since UDDI was proposed in 2000, it has evolved to reflect the need for manageability and federated control in enterprise operating scenarios, as well as to integrate more fully with other elements of service-oriented infrastructure. Version 1.0, released in 2000, created a foundation for the registry of Internet-based business services. UDDI Version 3 Specification The UDDI v3 OASIS Standard builds on the vision of UDDI as a "meta service" for locating Web services by enabling robust queries against rich metadata. UDDI Version 2 Specifications The UDDI v2 OASIS Standard set of specifications consists of the following documents:
Resource Description Framework The Resource Description Framework (RDF) is a family of World Wide Web Consortium (W3C) specifications[1] originally designed as a metadata data model. It has come to be used as a general method for conceptual description or modeling of information that is implemented in web resources, using a variety of syntax notations and data serialization formats. It is also used in knowledge management applications. RDF was adopted as a W3C recommendation in 1999. Overview[edit] RDF is an abstract model with several serialization formats (i.e. file formats), so the particular encoding for resources or triples varies from format to format. This mechanism for describing resources is a major component in the W3C's Semantic Web activity: an evolutionary stage of the World Wide Web in which automated software can store, exchange, and use machine-readable information distributed throughout the Web, in turn enabling users to deal with the information with greater efficiency and certainty. History[edit] <?
Ontologie, thésaurus, taxonomie et Web sémantique - 2004-03-19 - Ontologie, thésaurus, taxonomie et Web sémantique Comme cela arrive souvent, on me pose des questions par courrier électronique qui sont intéressantes mais dont je n'ai pas forcément la réponse immédiate donc cela demande beaucoup de recherche et de lectures. Ce n'est pas trop un problème car la question était fort intéressante. Je ne vais pas citer le nom de l'auteur du courrier sauf s'il m'y autorise. Quelle est la différence entre ontologie et thésaurus ? une ontologie correspond ni plus ni moins à ce que les documentalistes [...] appelaient un thésaurus. Philosophie Abordons tout de suite un premier point douloureux pour l'évacuer et se concentrer donc sur le sujet. ontologie n. f. • 1692; lat. philos. ontologia (1646) Philosophie. Le monde des sciences de l'information et surtout du Web sémantique s'est approprié ce terme, je ne sais par quel truchement, mais c'est un fait et au plus grand dam de nombreux philosophes. Organisation Petit dialogue culinaire Elle : Où est le curry ?
Web Ontology Language Istnieją trzy odmiany języka OWL: OWL Lite;OWL DL (rozszerzenie OWL Lite);OWL Full (rozszerzenie OWL DL). OWL został uznany w lutym 2004 roku za standard przez W3C. RDF i OWL są bardzo podobne i dotyczą tego samego problemu, jednak OWL jest językiem bardziej rozbudowanym, z większym słownikiem i mocniejszą składnią. Zobacz też[edytuj | edytuj kod] Bibliografia[edytuj | edytuj kod] Ontología (informática) El término ontología en informática hace referencia a la formulación de un exhaustivo y riguroso esquema conceptual dentro de uno o varios dominios dados; con la finalidad de facilitar la comunicación y el intercambio de información entre diferentes sistemas y entidades. Aunque toma su nombre por analogía, ésta es la diferencia con el punto de vista filosófico de la palabra ontología. Un uso común tecnológico actual del concepto de ontología, en este sentido semántico, lo encontramos en la inteligencia artificial y la representación del conocimiento. En algunas aplicaciones, se combinan varios esquemas en una estructura de facto completa de datos, que contiene todas las entidades relevantes y sus relaciones dentro del dominio. Típicamente, las ontologías en las computadoras se relacionan estrechamente con vocabularios fijos –una ontología fundacional– con cuyos términos debe ser descrito todo lo demás.
Faceted navigation for document discovery Better search with faceted navigation Text search is one of the most important ways that users of enterprise content can find the documents they need. Unfortunately, there are a number of reasons why enterprise text search systems often work less well than search of the public Internet (Enterprise Search: Tough Stuff, Rajat Mukherjee and Jianchang Mao. ACM Queue vol. 2, no. 2, April 2004). The main reason is that most enterprise content isn't cross-linked, so the search system doesn't have the page rank information that identifies "good" pages on a topic. Thus there is an opportunity to improve search within enterprises by using metadata. While there are several different ways for a user to specify metadata conditions, this article is about one that has special advantages: faceted navigation. Back to top Example of faceted navigation The faceted navigation search interface of Croton is shown in Figure 1. This example illustrates three key features of faceted navigation: Figure 1. Table 1.
Semantically-Interlinked Online Communities Un article de Wikipédia, l'encyclopédie libre. SIOC logo. Le vocabulaire[modifier | modifier le code] Il se compose de classes et de propriétés décrivant leurs relations. Les classes: Community : c'est le concept de plus haut niveau, qui permet de regrouper d'autres objetsSpace : un espace générique de stockage de donnéeItem : un contenu génériqueContainer : n'importe quel objet contenu dans un espace et pouvant contenir des contenusSite : un site web, c'est une spécialisation d'un espace; dérivé de la classe SpaceForum : un canal de discussion (un forum, un blog...), c'est un type de conteneurThread : un conteneur pour des contenus liés; dérivé de la classe ContainerPost : un contenu spécifique; dérivé de classe ItemUserAccount[1] : un utilisateurUsergroup : un groupe d'utilisateursRole : représente la fonction d'un utilisateur Notes et références[modifier | modifier le code] Liens externes[modifier | modifier le code] Portail du Web sémantique
Resource Description Framework Przykład opisu w modelu RDF. RDF (ang. Resource Description Framework) - język/metoda pozwalająca na opisywanie zasobów sieci Web, ze składnią opartą na XML, opracowana przez W3C. Służy przedstawieniu (nie zaś wyświetlaniu) wiedzy zawartej w Internecie, w sposób zrozumiały dla komputerów (łatwo przetwarzany przez programy komputerowe). RDF jest odpowiedzią na problem niezliczonej ilości danych: dokumentów tekstowych, zdjęć, grafik, filmów wideo, plików dźwiękowych, nad którymi trudno zapanować, zarządzać czy w jakikolwiek sposób sklasyfikować. Celem RDF jest utworzenie ogólnoświatowego standardu zapisu metadanych (danych o danych), w którym nie byłoby miejsca na dowolność taką jak w znacznikach <meta>. Założeniem RDF jest opis zasobu za pomocą wyrażenia składającego się z trzech elementów: podmiotu, orzeczenia/predykatu (własność) i dopełnienia/obiektu (wartość). <? jest zasobem,element <autor> jest własnością,zaś Jan Kowalski jest wartością.
RDF Primer The Resource Description Framework (RDF) is a language for representing information about resources in the World Wide Web. This Primer is designed to provide the reader with the basic knowledge required to effectively use RDF. It introduces the basic concepts of RDF and describes its XML syntax. It describes how to define RDF vocabularies using the RDF Vocabulary Description Language, and gives an overview of some deployed RDF applications. It also describes the content and purpose of other RDF specification documents. 1. The Resource Description Framework (RDF) is a language for representing information about resources in the World Wide Web. RDF is intended for situations in which this information needs to be processed by applications, rather than being only displayed to people. RDF is based on the idea of identifying things using Web identifiers (called Uniform Resource Identifiers, or URIs), and describing resources in terms of simple properties and property values. <? 2. (URL).
SKOS Simple Knowledge Organization System Namespace Document - H Status of this Document This document describes the schema available from the SKOS namespace. Introduction The Simple Knowledge Organization System (SKOS) is a common data model for sharing and linking knowledge organization systems via the Semantic Web.This document provides a brief description of the SKOS Vocabulary. For detailed information about the SKOS Recommendation, please consult the SKOS Reference [SKOS-REFERENCE] or the SKOS Primer [SKOS-PRIMER]. SKOS Schema Overview The following table gives a non-normative overview of the SKOS vocabulary; it replicates a table found in the (normative) SKOS Reference [SKOS-REFERENCE]. See also the SKOS Namespace Document - RDF/XML Variant [SKOS-RDF]. References SKOS Reference, Alistair Miles, Sean Bechhofer, Editors. SKOS Namespace - RDF/XML Variant. SKOS Primer, Antoine Isaac, Ed Summers, Editors. Acknowledgements This document is the result of extensive discussions within the W3C's Semantic Web Deployment Working Group.
Jena - Welcome to Jena SPARQL SPARQL (pronounced "sparkle", a recursive acronym for SPARQL Protocol and RDF Query Language) is an RDF query language, that is, a semantic query language for databases, able to retrieve and manipulate data stored in Resource Description Framework format.[2][3] It was made a standard by the RDF Data Access Working Group (DAWG) of the World Wide Web Consortium, and is recognized as one of the key technologies of the semantic web. On 15 January 2008, SPARQL 1.0 became an official W3C Recommendation,[4][5] and SPARQL 1.1 in March, 2013.[6] SPARQL allows for a query to consist of triple patterns, conjunctions, disjunctions, and optional patterns.[7] Implementations for multiple programming languages exist.[8] "SPARQL will make a huge difference" making the web machine-readable according to Sir Tim Berners-Lee in a May 2006 interview.[9] Advantages[edit] The example below demonstrates a simple query that leverages the ontology definition "foaf", often called the "friend-of-a-friend" ontology.