Main.VOSSparqlProtocol. Introduction to SPARQL in Virtuoso The Virtuoso SPARQL query service originally implemented the SPARQL Protocol for RDF (W3C Recommendation, 15 January 2008), and has been updated to support SPARQL 1.1, providing SPARQL query-processing for RDF data available on the open Internet. The query service implementation extends the standard protocol by providing multiple output-formats alongside the standard XML results serialization. At present this uses additional query parameters, although content-negotiation will be supported soon. SPARQL Service Endpoint Virtuoso reserves the path '/sparql/' and a synonym path '/SPARQL/' for SPARQL service. In the current implementation, Virtuoso defines virtual directories for HTTP requests received on the port specified as 'ServerPort' in the '[HTTPServer]' section of the Virtuoso configuration file which refer to one of these two path strings. Both GET and POST requests are supported by both server and client.
HTTP Request Methods HTTP Request Parameters. Sparql endpoint - NIF - CRBS Confluence Wiki. Skip to end of metadataGo to start of metadata The SPARQL endpoint is hosted at It contains NIFSTD ontology data referenced as as the default graph URI. We also include RDF representations of certain NIF data sources, e.g., connectivity data. We demonstrate a simple query that retrieves all the cerebellum GABA-ergic neurons. To execute the above query, place it in the dialog box "Query text" and press "Run Query".
Here column "e" shows the NIFSTD name of the entity that match the query and column "l" holds their label. We demonstrate a simple query that retrieves all neurons using Virtuoso's TRANSITIVE feature (a non-standard SPARQL extension). To execute the above query, place it in the dialog box "Query text" and press "Run Query". We demonstrate a simple query that retrieves all brain regions using Virtuoso's TRANSITIVE feature (a non-standard SPARQL extension). Dashboard - CRBS Confluence Wiki. Home - NIF - CRBS Confluence Wiki. Skip to end of metadataGo to start of metadata The advent of the World Wide Web has led to an explosion in the number of diverse resources available to neuroscientists.
Despite the availability of powerful search engines, locating these diverse resources has become increasingly difficult and time consuming. The NIF project utilizes both advanced machine-based search technologies and old-fashioned human legwork to provide access to neuroscience-relevant resources on the Web. Resources include research materials, Web pages, software tools, data sets, literature and general information. The NIF has developed technologies that allow a user to search across these different types of resources, all from a single interface.
A unique feature of the NIF is the ability to issue direct queries against multiple databases simultaneously, retrieving content that is largely hidden from traditional search engines. Software Releases (Current Release : Version 6.0) Developers Documentation. NeuroLex. NIFSTD Ontology Visualizer.