Semantic Web

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http://kmi.open.ac.uk/

Knowledge Media Institute | The Open University

The Knowledge Media Institute (KMi) was set up in 1995 in recognition of the need for the Open University to be at the forefront of research and development in a convergence of areas that impacted on the OU's very nature: Cognitive and Learning Sciences, Artificial Intelligence and Semantic Technologies, and Multimedia.
http://wiki.pdxhub.org/pdx_music_map/

pdx music map

Example applications (see also):

Install XSPARQL | Bridging the RDF and XML worlds

http://xsparql.deri.org/download XSPARQL is a prototype implementation of the XSPARQL language.
http://code.google.com/p/owltools/wiki/features

features - owltools - Summary of features of OWLTools - Wrapper for OWL API - Google Project Hosting

Although OWLTools wraps the OWLAPI, many of the ontologies currently being used are maintained as obo-format files. OWLTools provides simple access for OBO-style annotation properties such as synonyms, as well as direct access of OWLObjects via OBO-style IDs or unique labels.

owlpopulous - Semantic Spreadsheets for Populating OWL/RDF vocabularies - Google Project Hosting

Populous is an generic tool for building ontologies from simple spreadsheet like templates. http://code.google.com/p/owlpopulous/

Semantic Web Tools » AI3:::Adaptive Information

http://www.mkbergman.com/category/semantic-web-tools/ Locational information — points of interest/POIs, paths/routes/polylines, or polygons/regions — is common to many physical things in our real world. Because of its pervasiveness, it is important to have flexible and powerful display widgets that can respond to geo-locational data. We have been working for some time to extend our family of semantic components [1] within the open semantic framework (OSF) [2] to encompass just such capabilities.
RIOT - RDF I/O Technology - is a code library to support parsing and writing of RDF in non-XML formats.

RIOT - Jena Wiki

http://openjena.org/wiki/RIOT
http://answers.semanticweb.com/questions/1638/jena-vs-sesame-is-there-a-serious-complete-up-to-date-unbiased-well-informed-side-by-side-comparison-between-the-two

Jena vs Sesame: is there a serious, complete, up-to-date, unbiased, well informed, side by side, comparison between the two? - ANSWERS

Here's my take. I don't use either Jena or Sesame as a persistent triple store and don't expect to ever do so.

Semantic Web? It's Not Rocket Science. Except at NASA. - W3C Blog

http://www.w3.org/QA/2011/05/semantic_web_its_not_rocket_sc.html I met Jeanne Holm last week during the W3C Advisory Committee meeting.
NLP

LInk discovery framework for MEtric Spaces

Projects / LIMES

rdfa-core-java - RDFa Core 1.1 implementation in Java - Google Project Hosting

rdfa-core-java is a Java implementation of the RDFa Core 1.1 draft. Project is following specification strictly and passes all current unit tests.
The mission of the Library Linked Data incubator group is to help increase global interoperability of library data on the Web, by bringing together people involved in Semantic Web activities—focusing on Linked Data—in the library community and beyond, building on existing initiatives, and identifying collaboration tracks for the future. The group has explored how existing building blocks of librarianship, such as metadata models, metadata schemas, standards and protocols for building interoperability and library systems and networked environments, encourage libraries to bring their content, and generally re-orient their approaches to data interoperability towards the Web, also reaching to other communities.

C Library Linked Data Incubator Group

Linked Data | Linked Data - Connect Distributed Data across the Web

Linked Data is about using the Web to connect related data that wasn't previously linked, or using the Web to lower the barriers to linking data currently linked using other methods. More specifically, Wikipedia defines Linked Data as "a term used to describe a recommended best practice for exposing, sharing, and connecting pieces of data , information , and knowledge on the Semantic Web using URIs and RDF ."
The D2RQ Platform is a system for accessing relational databases as virtual, read-only RDF graphs.

D2RQ - Treating Non-RDF Databases as Virtual RDF Graphs - Chris Bizer

Graph Store