SWI-Prolog Semantic Web Library
Abstract
The semweb library provides a Prolog library based on foreign-language extensions for storing and manipulating RDF triples. It can handle quite large sets of triples only limited by available memory. One million triples requires about 80MB memory, so a fully equiped 32-bit machine can handle about 25 million triples. A 64-bit machine with 32Gb memory (just a few thousand euros in june 2009) can handle up to 150 million triples.
Prerequisites
This library depends on the RDF parser library which in turn depends on the XML parser provided by the sgml package.
Further info
This library defines the semantic web infrastructure for SWI-Prolog. The library is documented in semweb.pdf or the equivalent semweb.html. If your installation does not include this file, please visit http://www.swi-prolog.org/packages/
Staying up-to-date
This library is under active development. The recent version can be accessed from the GIT repository under the directory pl/packages/semweb. See http://www.swi-prolog.org/git.html for details on the central GIT repository and instructions for browsing the repository online.
Prolog files
rdf11.pl -- RDF 1.1 API | ||
|---|---|---|
| rdf_cache.pl -- Cache RDF triples | ||
| rdf_db.pl -- Core RDF database | ||
| rdf_http_plugin.pl -- RDF HTTP Plugin | ||
| rdf_library.pl -- RDF Library Manager | ||
| rdf_attach_library/1 | Attach manifest from Source. | |
| rdf_current_manifest/1 | True if URL is the URL of a currently loaded manifest file. | |
| rdf_library_index/2 | Query the content of the library. | |
| rdf_library_source/2 | True of Source is the URL that is part of the given library Id. | |
| rdf_list_library/0 | Prints known RDF library identifiers to current output. | |
| rdf_list_library/1 | Print library dependency tree to the terminal. | |
| rdf_list_library/2 | Print library dependency tree to the terminal. | |
| rdf_load_library/1 | Load ontologies from the library. | |
| rdf_load_library/2 | Load ontologies from the library. | |
| rdf_litindex.pl -- Search literals | ||
| rdf_ntriples.pl -- Process files in the RDF N-Triples format | ||
| rdf_persistency.pl -- RDF persistency plugin | ||
| rdf_portray.pl -- Portray RDF resources | ||
| rdf_sandbox.pl -- Declare RDF API sandbox-safe | ||
| rdf_turtle_write.pl -- Turtle - Terse RDF Triple Language writer | ||
| rdf_zlib_plugin.pl -- RDF compressed-data plugin | ||
| rdfs.pl -- RDFS handling | ||
| sparql_client.pl -- SPARQL client library | ||
| turtle.pl -- Turtle: Terse RDF Triple Language | ||