What is the Semantic Web? Read on for a brief introduction to the Semantic Web, how to get started using it, and to understand why we should invest in making our content semantic.
Ontotext GraphDB is a highly-efficient and robust graph database with RDF and SPARQL support. This documentation is a comprehensive guide, which explains every feature of GraphDB as well as topics such as setting up a repository, loading and working with data, tuning its performance, scaling, etc.
OWL lets you say much more about your data model, it shows you how to work efficiently with database queries and automatic reasoners, and it provides useful annotations for bringing your data models into the real world.
PoolParty Thesaurus Manager
Meets high expectations on usability
Provides customisable metadata schemas
Strictly built on open W3C standards
PoolParty Extractor
Highly performant text mining algorithms
Adresses different data sources
Delivers relevant context information
PoolParty Search
High end refinement assistants
Search different sources with one API
Ready for third party integration
The SKOS API is a Java interface and implementation for the W3C Simple Knowledge Organisation System SKOS. For more information about SKOS see here. An implementation of the SKOS API is provided which uses the OWL 2 API, at present you will need to obtain the OWL API seperately from the OWL 2 website. [UPDATE 12-09-2011] The current release of the SKOS API has been deprecated, a new version_3 developer branch is available in the SVN repository that works with the latest OWL API v3.
For more information please contact the user group at skos-dev@googlegroups.com
The SKOS API is open source and is available under the LGPL License
The SKOS API includes the following components:
An API for the major SKOS constructs and an efficient in-memory reference implementation based on the OWL 2 API
Abstract data model for working for SKOS that avoids commitment to any of the concrete syntaxes, such as RDF
RDF/XML parser and writer
OWL/XML parser and writer
OWL Functional Syntax parser and writer
Turtle parser and writer
Support for extending the underlying SKOS data model via the OWL 2 API
Support for integration with reasoners such as Pellet and FaCT++
Range of convenience methods for working with SKOS
G. Hillairet, F. Bertrand, J. Lafaye, and others. Proceedings of the 4th International Workshop on Semantic Web Enabled Software Engineering, SWESE, (2008)
G. Gottlob, G. Orsi, and A. Pieris. (2011)cite arxiv:1112.0343Comment: Extended version of "Ontological Queries: Rewriting and Optimization" presented at ICDE 2011.
M. Faerber, O. Archne, F. Jochaud, and S. Jablonski. Umweltbundesamt http://www.umweltbundesamt.de, page 21-30. Umweltbundesamt http://www.umweltbundesamt.de, (2008)ISSN 1862-4804.
