Class: RdfsPlusRulebook

Inherits:
RdfsRulebook show all
Defined in:
lib/pomegranate/rdfs_plus_rulebook.rb

Instance Method Summary collapse

Methods inherited from RdfsRulebook

#rdfs_domain, #rdfs_range, #rdfs_rules, #rdfs_sub_class_of, #rdfs_sub_property_of

Instance Method Details

#owl_equivalent_class ⇒ Object

Implements Class Equivalence through owl:equivalentClass

Semantics

Given:
A owl:equivalentClass B
r rdf:type A

Infer:
r rdf:type B

   AND

Given:
C owl:equivalentClass D
C rdfs:subClassOf D
z rdf:type D

Infer:
z rdf:type C

Example

p = Triple.new("mit:class", "owl:equivalentClass", "mit:subject"); 
h = Triple.new(":6.111", "rdf:type", "mit:class");
assert p; assert h; #=> infers a triple ~= Triple.new(":6.111", ":rdf:type", ":mit:subject")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 141

def owl_equivalent_class
end

#owl_equivalent_property ⇒ Object

Implements Property Equivalence through owl:equivalentProperty

Semantics

Given:
A owl:equivalentProperty B
r A c

Infer:
r B C

   AND

Given:
C owl:equivalentClass D
C rdfs:subClassOf D
z rdf:type D

Infer:
z rdf:type C

Example

p = Triple.new("mit:took_class", "owl:equivalentProperty", "mit:took_course"); 
h = Triple.new(":Pius", "mit:took_course", ":6.111");
assert p; assert h; #=> infers a triple ~= Triple.new(":Pius", "mit:took_class", ":6.111")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 180

def owl_equivalent_property
end

#owl_functional_property ⇒ Object

owl:FunctionalProperty

Semantics

Given:
P rdf:type owl:FunctionalProperty
x P y
x P z

Infer:
y owl:sameAs z

Example

p = Triple.new("mit:had_academic_advisor", "rdf:type", "owl:FunctionalProperty");
h = Triple.new(":Pius", "mit:had_academic_advisor", ":Hal");
d = Triple.new(":Pius", "mit:had_academic_advisor", ":Dude_Who_Wrote_SICP_With_Gerald_Sussman");
assert p; assert h; assert d; #=> infers a triple ~= Triple.new(":Hal", "owl:sameAs", ":Dude_Who_Wrote_SICP_With_Gerald_Sussman")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 276

def owl_functional_property
end

#owl_inverse_functional_property ⇒ Object

owl:InverseFunctionalProperty

Semantics

Given:
P rdf:type owl:InverseFunctionalProperty
z P x
y P x

Infer:
y owl:sameAs z

Example

p = Triple.new("mit:lived_alone_fall_2004_in", "rdf:type", "owl:FunctionalProperty");
h = Triple.new(":Pius", "mit:lived_alone_fall_2004_in", ":pomegranate_314_at_Next_House");
d = Triple.new(":2004_UA_President", "mit:lived_alone_fall_2004_in", ":pomegranate_314_at_Next_House");
assert p; assert h; assert d; #=> infers a triple ~= Triple.new(":Pius", "owl:sameAs", ":2004_UA_President")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 311

def owl_inverse_functional_property
end

#owl_inverse_of ⇒ Object

Implements Type Propagation through owl:inverseOf

Semantics

Given:
P owl:inverseOf Q
x P y

Infer:
y Q x

Example

p = Triple.new(":Pius", ":took_a_class_taught_by", ":Winston"); 
h = Triple.new(":took_a_class_taught_by", "owl:inverseOf", ":taught") 
assert p; assert h;  #=> infers a triple ~= Triple.new(":Winston", "taught", ":Pius")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 41

def owl_inverse_of
end

#owl_same_as ⇒ Object

Implements Individual Equivalence through owl:sameAs

Semantics

Given:
x owl:sameAs y
o P x

Infer:
o P y

   AND

Given:
x owl:sameAs y
x P o

Infer:
z rdf:type C

Example

p = Triple.new(":Pius", "owl:sameAs", ":Uzamere"); 
h = Triple.new(":Pius", "mit:took_course", ":6.171");
assert p; assert h; #=> infers a triple ~= Triple.new(":Uzamere", "mit:took_course", ":6.171")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 217

def owl_same_as
end

#owl_symmetric_property ⇒ Object

Implements Type Propagation through owl:SymmetricProperty

Semantics

Given:
P rdf:type owl:SymmetricProperty

Infer:
P owl:inverseOf P

Example

p = Triple.new(":Pius", ":was_in_a_class_with", ":Adam"); 
h = Triple.new(":was_in_a_class_with", "rdf:type", "owl:SymmetricProperty") 
assert p; assert h;  #=> infers a triple ~= Triple.new(":Adam", ":was_in_a_class_with", ":Pius")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 71

def owl_symmetric_property
end

#owl_transitive_property ⇒ Object

Implements Type Propagation through owl:TransitiveProperty

Semantics

Given:
P rdf:type owl:TransitiveProperty
X P Y
X P Z

Infer:
X P Z

Example

p = Triple.new(":Dirichlet", ":is_an_academic_ancestor_of", ":Minsky"); 
h = Triple.new(":Poisson", ":is_an_academic_ancestor_of", ":Dirichlet");
j = Triple.new(":is_an_academic_ancestor_of", "rdf:type", "owl:TransitiveProperty"); 
assert p; assert h; assert j;  #=> infers a triple ~= Triple.new(":Poisson", ":is_an_academic_ancestor_of", ":Minsky")

Author:

  • Pius Uzamere



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 100

def owl_transitive_property
end

#rdfs_plus_rules ⇒ Object

nodoc



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 23

def rdfs_plus_rules
  ## 
  # Implements Type Propagation through owl:inverseOf
  #
  # ==== Semantics
  #   Given:
  #   P owl:inverseOf Q
  #   x P y
  #
  #   Infer:
  #   y Q x
  #
  # ==== Example
  #   p = Triple.new(":Pius", ":took_a_class_taught_by", ":Winston"); 
  #   h = Triple.new(":took_a_class_taught_by", "owl:inverseOf", ":taught") 
  #   assert p; assert h;  #=> infers a triple ~= Triple.new(":Winston", "taught", ":Pius")
  #
  # @author Pius Uzamere
  def owl_inverse_of
  end
  
  rule :owl_inverse_of,
    [Triple,:fact,{m.predicate=>:pred, m.object => :new_subj, m.subject => :new_obj}],
    [Triple,:ont_statement,{m.object => :inferred_pred},m.predicate=="owl:inverseOf", m.subject == b(:pred)],
    [:not, Triple, m.predicate==b(:inferred_pred), m.subject==b(:new_subj), m.object==b(:new_obj)] do |v|
      inferred_property = v[:ont_statement].object
      obj = v[:fact].subject
      subj = v[:fact].object
      assert Triple.new(subj, inferred_property, obj)
      puts "Made type inference based on owl:inverseOf: Triple(#{subj}, #{inferred_property}, #{obj})"
  end
  
  ## 
  # Implements Type Propagation through owl:SymmetricProperty
  #
  # ==== Semantics
  #   Given:
  #   P rdf:type owl:SymmetricProperty
  #
  #   Infer:
  #   P owl:inverseOf P
  #
  # ==== Example
  #   p = Triple.new(":Pius", ":was_in_a_class_with", ":Adam"); 
  #   h = Triple.new(":was_in_a_class_with", "rdf:type", "owl:SymmetricProperty") 
  #   assert p; assert h;  #=> infers a triple ~= Triple.new(":Adam", ":was_in_a_class_with", ":Pius")
  #
  # @author Pius Uzamere
  def owl_symmetric_property
  end
  
  rule :owl_symmetric_property,
    [Triple,:ont_statement,m.predicate=="rdf:type",m.object=="owl:SymmetricProperty"] do |v|
      prop = v[:ont_statement].subject
      assert Triple.new(prop, "owl:inverseOf", prop)
      puts "Made type inference based on owl:SymmetricProperty: Triple(#{prop}, owl:inverseOf, #{prop})"
  end
  
  ## 
  # Implements Type Propagation through owl:TransitiveProperty
  #
  # ==== Semantics
  #   Given:
  #   P rdf:type owl:TransitiveProperty
  #   X P Y
  #   X P Z
  #
  #   Infer:
  #   X P Z
  #
  # ==== Example
  #   p = Triple.new(":Dirichlet", ":is_an_academic_ancestor_of", ":Minsky"); 
  #   h = Triple.new(":Poisson", ":is_an_academic_ancestor_of", ":Dirichlet");
  #   j = Triple.new(":is_an_academic_ancestor_of", "rdf:type", "owl:TransitiveProperty"); 
  #   assert p; assert h; assert j;  #=> infers a triple ~= Triple.new(":Poisson", ":is_an_academic_ancestor_of", ":Minsky")
  #
  # @author Pius Uzamere
  def owl_transitive_property
  end
      
  rule :owl_transitive_property,
    [Triple,:ont_statement,{m.subject => :trans_prop},m.predicate=="rdf:type",m.object=="owl:TransitiveProperty"],
    [Triple,:fact1,{m.predicate=>:predi, m.subject => :sub, m.object => :trans_obj}, m.predicate == b(:trans_prop), m.subject.not== m.object],
    [Triple,:fact2, m.predicate==b(:predi), m.subject==b(:trans_obj), m.predicate.not=="owl:inverseOf", m.object.not== b(:sub) ] do |v|
      subj = v[:fact1].subject
      obj = v[:fact2].object
      prop = v[:ont_statement].subject
      assert Triple.new(subj, prop, obj)
      puts "Made type inference based on owl:TransitiveProperty: Triple(#{subj}, #{prop}, #{obj})"
  end
  
  ## 
  # Implements Class Equivalence through owl:equivalentClass
  #
  # ==== Semantics
  #   Given:
  #   A owl:equivalentClass B
  #   r rdf:type A
  #   
  #   Infer:
  #   r rdf:type B
  #
  #      AND
  #
  #   Given:
  #   C owl:equivalentClass D
  #   C rdfs:subClassOf D
  #   z rdf:type D
  #
  #   Infer:
  #   z rdf:type C
  #
  # ==== Example
  #   p = Triple.new("mit:class", "owl:equivalentClass", "mit:subject"); 
  #   h = Triple.new(":6.111", "rdf:type", "mit:class");
  #   assert p; assert h; #=> infers a triple ~= Triple.new(":6.111", ":rdf:type", ":mit:subject")
  #
  # @author Pius Uzamere
  def owl_equivalent_class
  end
  
  rule :owl_equivalent_class,
    [Triple,:ont_statement,m.predicate=="owl:equivalentClass"] do |v|
      assert Triple.new("owl:equivalentClass", "rdf:type", "owl:SymmetricProperty")
      assert Triple.new("owl:equivalentClass", "rdfs:subPropertyOf", "rdfs:subClassOf")
      #this is cute . . . only annoying thing is that you don't get the downstream explanation of the inferences
  end
  
  
  ## 
  # Implements Property Equivalence through owl:equivalentProperty
  #
  # ==== Semantics
  #   Given:
  #   A owl:equivalentProperty B
  #   r A c
  #   
  #   Infer:
  #   r B C
  #
  #      AND
  #
  #   Given:
  #   C owl:equivalentClass D
  #   C rdfs:subClassOf D
  #   z rdf:type D
  #
  #   Infer:
  #   z rdf:type C
  #
  # ==== Example
  #   p = Triple.new("mit:took_class", "owl:equivalentProperty", "mit:took_course"); 
  #   h = Triple.new(":Pius", "mit:took_course", ":6.111");
  #   assert p; assert h; #=> infers a triple ~= Triple.new(":Pius", "mit:took_class", ":6.111")
  #
  # @author Pius Uzamere
  
  def owl_equivalent_property
  end
  
  rule :owl_equivalent_property,
    [Triple,:ont_statement,m.predicate=="owl:equivalentProperty"] do |v|
      assert Triple.new("owl:equivalentProperty", "rdf:type", "owl:SymmetricProperty")
      assert Triple.new("owl:equivalentProperty", "rdfs:subPropertyOf", "rdfs:subPropertyOf")
      #this is cute . . . only annoying thing is that you don't get the downstream explanation of the inferences
  end

  ## 
  # Implements Individual Equivalence through owl:sameAs
  #
  # ==== Semantics
  #   Given:
  #   x owl:sameAs y
  #   o P x
  #   
  #   Infer:
  #   o P y
  #
  #      AND
  #
  #   Given:
  #   x owl:sameAs y
  #   x P o
  #
  #   Infer:
  #   z rdf:type C
  #
  # ==== Example
  #   p = Triple.new(":Pius", "owl:sameAs", ":Uzamere"); 
  #   h = Triple.new(":Pius", "mit:took_course", ":6.171");
  #   assert p; assert h; #=> infers a triple ~= Triple.new(":Uzamere", "mit:took_course", ":6.171")
  #
  # @author Pius Uzamere
  
  def owl_same_as
  end
  
  rule :owl_same_as_symmetricity,
    [Triple,:ont_statement, m.predicate=="owl:sameAs"] do |v|
    assert Triple.new("owl:sameAs", "rdf:type", "owl:SymmetricProperty")
    puts "asserting the symmetricity of owl:sameAs"
  end
  
  
  rule :owl_same_as_when_subject,

    [Triple,:ont_statement,{m.subject => :original, m.object => :doppelganger}, m.predicate=="owl:sameAs"],
    [Triple,:fact, {m.predicate => :p, m.object => :common_object}, m.subject == b(:original), m.subject.not== b(:doppelganger), m.predicate.not== "owl:sameAs"],
    [:not, Triple, m.predicate==b(:p), m.subject==b(:doppelganger), m.object==b(:common_object)] do |v|

    subj = v[:ont_statement].object
    pred = v[:fact].predicate
    obj = v[:fact].object
    
    puts "Made type inference based on owl:sameAs: Triple(#{subj}, #{pred}, #{obj})"
    assert Triple.new(subj, pred, obj)
    #this is cute . . . only annoying thing is that you don't get the downstream explanation of the inferences
  end
  
  rule :owl_same_as_when_object,
    [Triple,:ont_statement,{m.object => :original, m.subject => :doppelganger}, m.predicate=="owl:sameAs"],
    [Triple,:fact, {m.predicate => :p, m.object => :ob, m.subject => :common_subject}, m.object == b(:original), m.object.not== b(:doppelganger), m.predicate.not== "owl:sameAs"],
    [:not, Triple, m.predicate==b(:p), m.subject==b(:common_subject), m.object==b(:doppelganger)] do |v|

    obj = v[:ont_statement].subject
    pred = v[:fact].predicate
    subj = v[:fact].subject
    
    puts "Made type inference based on owl:sameAs: Triple(#{subj}, #{pred}, #{obj})"
    assert Triple.new(subj, pred, obj)
    #this is cute . . . only annoying thing is that you don't get the downstream explanation of the inferences
  end
  
  ## 
  # owl:FunctionalProperty
  #
  # ==== Semantics
  #   Given:
  #   P rdf:type owl:FunctionalProperty
  #   x P y
  #   x P z
  #   
  #   Infer:
  #   y owl:sameAs z
  #
  # ==== Example
  #   p = Triple.new("mit:had_academic_advisor", "rdf:type", "owl:FunctionalProperty");
  #   h = Triple.new(":Pius", "mit:had_academic_advisor", ":Hal");
  #   d = Triple.new(":Pius", "mit:had_academic_advisor", ":Dude_Who_Wrote_SICP_With_Gerald_Sussman");
  #   assert p; assert h; assert d; #=> infers a triple ~= Triple.new(":Hal", "owl:sameAs", ":Dude_Who_Wrote_SICP_With_Gerald_Sussman")
  #
  # @author Pius Uzamere
  
  def owl_functional_property
  end
  
  rule :owl_functional_property,
    [Triple,:ont_statement,{m.subject => :the_prop}, m.predicate == "rdf:type", m.object=="owl:FunctionalProperty"],
    [Triple,:fact1, {m.subject => :common_subject, m.object => :first_object}, m.predicate == b(:the_prop)],
    [Triple,:fact2, {m.object => :second_object}, m.subject == b(:common_subject), m.predicate == b(:the_prop)] do |v|

      subj = v[:fact1].object
      obj = v[:fact2].object
      
      puts "Made type inference based on owl:FunctionalProperty: Triple(#{subj}, owl:sameAs, #{obj})"
      assert Triple.new(subj, "owl:sameAs", obj)
  end
  
  ## 
  # owl:InverseFunctionalProperty
  #
  # ==== Semantics
  #   Given:
  #   P rdf:type owl:InverseFunctionalProperty
  #   z P x
  #   y P x
  #   
  #   Infer:
  #   y owl:sameAs z
  #
  # ==== Example
  #   p = Triple.new("mit:lived_alone_fall_2004_in", "rdf:type", "owl:FunctionalProperty");
  #   h = Triple.new(":Pius", "mit:lived_alone_fall_2004_in", ":pomegranate_314_at_Next_House");
  #   d = Triple.new(":2004_UA_President", "mit:lived_alone_fall_2004_in", ":pomegranate_314_at_Next_House");
  #   assert p; assert h; assert d; #=> infers a triple ~= Triple.new(":Pius", "owl:sameAs", ":2004_UA_President")
  #
  # @author Pius Uzamere
  
  def owl_inverse_functional_property
  end
  
  rule :owl_inverse_functional_property,
    [Triple,:ont_statement,{m.subject => :the_prop}, m.predicate == "rdf:type", m.object=="owl:InverseFunctionalProperty"],
    [Triple,:fact1, {m.object => :common_object, m.subject => :first_subject}, m.predicate == b(:the_prop)],
    [Triple,:fact2, {m.subject => :second_subject}, m.object == b(:common_object), m.predicate == b(:the_prop)] do |v|

      subj = v[:fact1].subject
      obj = v[:fact2].subject
      
      puts "Made type inference based on owl:InverseFunctionalProperty: Triple(#{subj}, owl:sameAs, #{obj})"
      assert Triple.new(subj, "owl:sameAs", obj)
  end

end

#rules ⇒ Object 



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# File 'lib/pomegranate/rdfs_plus_rulebook.rb', line 17

def rules
  rdfs_rules
  rdfs_plus_rules
end