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_litindex.pl -- Search literals | ||
| rdf_delete_literal_index/1 | Fully delete a literal index. | |
| rdf_find_literal/2 | Find literals in the RDF database matching Spec. | |
| rdf_find_literals/2 | Find literals in the RDF database matching Spec. | |
| rdf_literal_index/2 | True when Index is a literal map containing the index of Type. | |
| rdf_set_literal_index_option/1 | Set options for the literal package. | |
| rdf_stopgap_token/1 | True when Token is a stopgap token. | |
| rdf_token_expansions/2 | Determine which extensions of a token contribute to finding literals. | |
| rdf_tokenize_literal/2 | Tokenize a literal. | |
| 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 | ||