RDFS.rb: RDF Schema Reasoner for Ruby

This is a pure-Ruby forward-chaining inference engine supporting RDFS and RDFS++ entailment rules. It is intended to be used together with the RDF.rb library.

About RDF Schema (RDFS)

• http://www.w3.org/TR/rdf-schema/
• http://www.w3.org/TR/rdf-mt/
• http://en.wikipedia.org/wiki/RDF_Schema

Examples

require 'rdfs'

Defining an RDFS entailment rule class

# @see http://www.w3.org/TR/rdf-mt/#RDFRules
class RDF1 < RDFS::Rule
  antecedent :uuu, :aaa, :yyy
  consequent :aaa, RDF.type, RDF.Property
end

Defining an RDFS entailment rule instance

# @see http://www.w3.org/TR/rdf-mt/#RDFRules
rdf1 = RDFS::Rule.new do
  antecedent :uuu, :aaa, :yyy
  consequent :aaa, RDF.type, RDF.Property
end

Documentation

• http://rdfs.rubyforge.org/

Download

To get a local working copy of the development repository, do:

% git clone git://github.com/bendiken/rdfs.git

Alternatively, you can download the latest development version as a tarball as follows:

% wget http://github.com/bendiken/rdfs/tarball/master

Dependencies

• RDF.rb (>= 0.0.5)

Installation

The recommended installation method is via RubyGems. To install the latest official release from Gemcutter, do:

% [sudo] gem install rdfs

Resources

• http://rdfs.rubyforge.org/
• http://github.com/bendiken/rdfs
• http://gemcutter.org/gems/rdfs
• http://rubyforge.org/projects/rdfs/
• http://raa.ruby-lang.org/project/rdfs/

Author

• Arto Bendiken - http://ar.to/

License

RDFS.rb is free and unencumbered public domain software. For more information, see http://unlicense.org/ or the accompanying UNLICENSE file.