Semantic Web Client Library(About) The Semantic Web Client Library represents the complete Semantic Web as a single RDF graph. The library enables applications to query this global graph using SPARQL- and find(SPO) queries. To answer queries, the library dynamically retrieves information from the Semantic Web by dereferencing HTTP URIs and by following rdfs:seeAlso links.
What do HTTP URIs Identify? - Design Issues(About) "This was a result of my being in a minority with this opinion on the Technical Architecture Group, and yet finding it the only one I could accept. This is related to TAG issue HTTPRange-14." (TBL)
[httpRange-14] Resolved from Roy T. Fielding on 2005-06-19 (email@example.com from June 2005)(About) we provide advice to the community that they may mint "http" URIs for any resource provided that they follow this simple rule for the sake of removing ambiguity: a) If an "http" resource responds to a GET request with a 2xx response, then the resource identified by that URI is an information resource; b) If an "http" resource responds to a GET request with a 303 (See Other) response, then the resource identified by that URI could be any resource; c) If an "http" resource responds to a GET request with a 4xx (error) response, then the nature of the resource is unknown.
Fresnel - Display Vocabulary for RDF(About) Presenting Semantic Web content in a human-readable way consists in addressing two issues: specifying what information contained in an RDF graph should be presented and how this information should be presented. We developed Fresnel as a browser-independent vocabulary of core RDF display concepts applicable across different representation paradigms and output formats.
Linked Data - Design Issues(About) The Semantic Web isn't just about putting data on the web. It is about making links, so that a person or machine can explore the web of data. With linked data, when you have some of it, you can find other, related, data.
Like the web of hypertext, the web of data is constructed with documents on the web. However, unlike the web of hypertext, where links are relationships anchors in hypertext documents written in HTML, for data they links between arbitrary things described by RDF,. The URIs identify any kind of object or concept. But for HTML or RDF, the same expectations apply to make the web grow:
Use URIs as names for things
Use HTTP URIs so that people can look up those names.
When someone looks up a URI, provide useful information.
Include links to other URIs. so that they can discover more things.
Simple. In fact, though, a surprising amount of data isn't linked in 2006, because of problems with one or more of the steps. This article discusses solutions to these problems, details of implementation, and factors affecting choices about how you publish your data.