PUBLIC MARKS with tag SPARQL

This is a wrapper around a SPARQL service. It helps in creating the query URI and, possibly, convert the result into a more managable format.

how to find recipes that use specific ingredients.

re-wrote our original SPARQL XML results parser to use Expat, the non-validating (and fast) XML parser.

This firefox add-on lets you visualize all the RDFa data included in a web page, shows a list with errors and warnings found while parsing the document, and allows to execute SPARQL queries on the RDFa content.

The growing suite of SPARQL query services offer consumers an opportunity to merge data distributed across the web. A small number of extensions to SPARQL 1.1 enable expression of the merging queries. In particular, a SERVICE allows one to direct a portion of a query to a particular SPARQL query service, just as a GRAPH directs queries to particular named graphs. A BINDINGS keyword adds a compact syntax for tranfering results which constrain a query. The combination of these extensions allows one to compose a query which delegates parts of the query to a series of services. This specification defines the syntax and semantics of these extensions.

HTTP SPARQL server and client for twisted and rdflib

D2R Server is a tool for publishing relational databases on the Semantic Web.

It enables RDF and HTML browsers to navigate the content of the database,

and allows applications to query the database using the SPARQL query language.

This is a wrapper around a SPARQL service. It helps in creating the query URI and, possibly, convert the result into a more manageable format.

Summary: As more data is being stored in RDF formats like RSS, a need has arisen for a simple way to locate specific information. SPARQL, a powerful new query language fills that space, making it easy to find the data you need in the RDF haystack. Take a tour of SPARQL's features and learn how to use SPARQL queries from your own Java™ applications with the Jena Semantic Web Toolkit.

Tracker is a tool designed to extract information and metadata about your personal data so that it can be searched easily and quickly.

One result of making data available is that it enables you and others to easily construct nice visualisations over the data, and maybe spot useful patterns within it.

using a SPARQL query as a Data Source for a Google Visualisation of the MP’s expenses data.

Fyzz parses the SPARQL query and generates something we decided to call an AST although it's still a bit rough for now. Fyzz understands simple triples, distincts, limits, offsets and other basic functionalities.

fyzz is a sparkling Python parser for the Sparql query language

By providing open access to increasing amounts of Linked Data, public SPARQL endpoints are boosting the growth of the Semantic Web by providing great data for you to use in your applications. As with many other data-driven Web sites out there, a Web page can be created by sending a query to these endpoints and then wrapping the results in HTML tags; the big difference for SPARQL endpoints is the public availability of this new data for your applications. This article shows how simple CGI scripting can get data from two different SPARQL endpoints to build applications that answer your user's questions about actors shared between two directors and which musicians have released which albums.

Leigh Dodds, Platform Programme Manager, gives the following screencast to demonstrate using the Talis Platform to use rich RDF features on the BBC’s /programmes and /music sites.

how RDFa can be used to support this "Repurpose-Republish" loop.