Inspired by Yahoo's Pipes, DERI Web Data Pipes implement a generalization which can also deal with formats such as RDF (RDFa), Microformats and generic XML. It is OSS DERI Pipes provides a rich web GUI where pipes can be graphically edited, debugged and invoked. The execution engine is also available as a standalone JAR, which is ideal for embedded use. DERI Pipes, in general, produce as an output streams of data (e.g. XML, RDF,JSON) that can be used by applications. However, when invoked by a normal browser, they will provide a end user GUI for the user to enter parameter values and browse the results
This is the Watson Web interface for searching ontologies and semantic documents using keywords. This interface is subject to frequent evolutions and improvements. If you want to share your opinion, suggest improvement or comment on the results, don't hesitate to contact us... At the moment, you can enter a set of keywords (e.g. "cat dog old_lady"), and obtain a list of URIs of semantic documents in which the keywords appear as identifiers or in literals of classes, properties, and individuals. You can also use "jokers" in the keywords (e.g., "ca? dog*"). Navigation in the results follows very simple principles. First, whenever a sign appears, it can be used to display additional information about the element it is attached with. Second, every URI is clickable. A URI is a link to a page describing either the entity or the semantic document it corresponds to, and gives access to additional functionalities using this particular entity or document.
The Resource Description Framework RDF allows you to describe web documents and resources from the real world—people, organisations, things—in a computer-processable way. Publishing such descriptions on the web creates the semantic web. URIs are very important as the link between RDF and the web. This article presents guidelines for their effective use.
Welcome to TuQS! Turnguard's QuadStore is the first draft of an own implementation of a QuadStore with main focus on data-retrieval speed. TuQS can be queried and updated using openrdf's SAIL API. Please choose a repository here. * Features o SAIL accessible o True QuadStore with GraphSupport o HighSpeed regex SPARQL filters o Userrights on TripleBasis o Extendable to a QuintStore (or more generally to an n-Store) o Cachable SPARQL Queries for further speed improvement o Clusterable o Federationable o FullTextSearchable
Semantic Interoperability of Metadata and Information in unLike Environments.
SIMILE is focused on developing robust, open source tools that empower users to access, manage, visualize and reuse digital assets. Learn more about the SIMILE project.
NEPOMUK brings together researchers, industrial software developers, and representative industrial users, to develop a comprehensive solution for extending the personal desktop into a collaboration environment which supports both the personal information management and the sharing and exchange across social and organizational relations.
This paper describes the crisis of identity facing the World Wide Web and, in particular, the RDF community. It shows how that crisis is rooted in a lack of clarity about the nature of "resources" and how concepts developed during the XML Topic Maps effort can provide a solution that works not only for Topic Maps, but also for RDF and semantic web technologies in general.
In den Normdateien steckt über Jahrzehnte hinweg gesammeltes Wissen auf hohem Qualitätsniveau. Vielleicht aber noch wertvoller ist die Verlinkungsinformation auf viele Millionen Publikationen, die einen großen Teil der Erschließungsarbeit in Bibliotheken, Museen und Archiven abbildet. Wie aber können wir diese Informationen breiter nutzbar anbieten und auch außerhalb der Daten-erzeugenden Anwendergemeinschaft einbringen? Eine Arbeitsgruppe der Deutschen Nationalbibliothek stellt dazu seit geraumer Zeit Überlegungen an, die jetzt in ein Umsetzungskonzept eingegangen sind und realisiert werden sollen. Der Beitrag will diese Überlegungen und Ansätze präsentieren, die konkreten Entwicklungsarbeiten vorstellen und einen Ausblick auf zukünftige Suchdienste und die Rolle der Normdaten im Semantic Web versuchen.
S. Bechhofer, R. Volz, и P. Lord. Proc. of the First International Semantic Web Conference 2003 (ISWC 2003), October 21-23, 2003, Sanibel Island, Florida, стр. 659-675. (2003)