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) What is difference b/w rdfs:domain and rdfs:range.? From a very simplistic point of view, the domain and range properties are there to give you insight into the way that the property links a subject to an object. In the case of the domain property, when you link a subject to an object using a property with this associated attribute, then the subject qualifies as a type of thing specified in the domain. For example, we look at a vocabulary and we see that the domain of the the "drives" property is a "Person" so, simply put, as long as the subject being is described using the “drives” attribute is a type of "Person" (or could be a type of "Person"), then you should have no problem going ahead using that term to describe that thing, because most other people will interpret that if something is described using this term, then it is a "Person". You'll find it is not only humans but also machines (or reasoners in this case) that make the same inferences.
LODE - Live OWL Documentation Environment Live OWL Documentation Environment (LODE), version 1.2 dated 3 June 2013, is a service that automatically extracts classes, object properties, data properties, named individuals, annotation properties, general axioms and namespace declarations from an OWL and OWL2 ontology, and renders them as ordered lists, together with their textual definitions, in a human-readable HTML page designed for browsing and navigation by means of embedded links. This LODE service is an open source development, and can be freely used, as described in this document. It may be used in conjunction with content negotiation to display this human-readable version of an OWL ontology when the user accesses the ontology using a web browser, or alternatively to deliver the OWL ontology itself when the user accesses the ontology using an ontology editing tool such as Protégé and NeOn Toolkit. The following pseudo-URL describes the way to call the LODE service: where:
SKOS Simple Knowledge Organization System Namespace Document - HTML Variant, 18 August 2009 Recommendation Edition 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].
SWValidators - Semantic Web Standards This page tries to collect what the current situation is with SW related validators what could be added with a reasonable amount of work The page was created after Semantic Web Coordination Group discussions, noting that the current RDF validator has not been actively developed for several years. While it is functional and serves a basic purpose, there is always the potential for improvements.
ARQ - API Application The API of the application is in the package com.hp.hpl.jena.query. Other packages contain various parts of the system (engine running, analyzers, testing, etc.). Most applications don't need to the main package. RDF - Semantic Web Standards Overview RDF is a standard model for data interchange on the Web. RDF has features that facilitate data merging even if the underlying schemas differ, and it specifically supports the evolution of schemas over time without requiring all the data consumers to be changed.
Dublin Core Metadata Element Set, Version 1.1 Introduction The Dublin Core Metadata Element Set is a vocabulary of fifteen properties for use in resource description. The name "Dublin" is due to its origin at a 1995 invitational workshop in Dublin, Ohio; "core" because its elements are broad and generic, usable for describing a wide range of resources.
Problems of the RDF model: Blank Nodes There is a number of challenges regarding the realization of the Semantic Web vision. In the series of blog posts to follow, I’ll be focusing on the Linked Data field and the ideas, technologies and standards it’s based on. I’ll analyze the problems of the three important aspects of Linked Data: the RDF model, the RDF notation and the drawbacks of Linked Data itself. Problems regarding the RDF model
About Welcome to the Datahub, the free, powerful data management platform from the Open Knowledge Foundation, based on the CKAN data management system. About CKAN CKAN is a tool for managing and publishing collections of data. It is used by national and local governments, research institutions, and other organisations which collect a lot of data. With its powerful search and faceting, users can browse and find the data they need, and preview it using maps, graphs and tables - whether they are developers, journalists, researchers, NGOs, citizens or your own colleagues.
DCMI Metadata Terms This document is an up-to-date, authoritative specification of all metadata terms maintained by the Dublin Core Metadata Initiative. Included are the fifteen terms of the Dublin Core Metadata Element Set, which have also been published as IETF RFC 5013 [RFC5013], ANSI/NISO Standard Z39.85-2007 [NISOZ3985], and ISO Standard 15836:2009 [ISO15836]. Each term is specified with the following minimal set of attributes: Where applicable, the following attributes provide additional information about a term: This release of DCMI Metadata Terms reflects changes described more fully in the document "Maintenance changes to DCMI Metadata Terms" [REVISIONS].