def three_concept_graph():
graph = gel.KnowledgeBase('bot', 'top')
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.Concept('C_prime'))
graph.add_concept(gel.Concept('D'))
graph.add_role(gel.Role('i'))
return graph
def graph_pre_role_inclusion():
graph = gel.KnowledgeBase('bot', 'top')
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.Concept('D'))
graph.add_role(gel.Role('i'))
graph.add_role(gel.Role('j'))
return graph
def test_graph_add_pbox_axiom():
graph = gel.KnowledgeBase('bot', 'top')
assert graph.pbox_axioms == {}
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.Concept('D'))
graph.add_axiom('C', 'D', graph.is_a, pbox_id=0)
expected_axiom = (graph.get_concept('C'), graph.get_concept('D'),
graph.is_a)
assert graph.pbox_axioms == {0: expected_axiom}
def concept_with_arrows():
concept_a = gel.Concept('a')
concept_b = gel.Concept('b')
role = gel.Role('r')
arrow1 = gel.Arrow(concept_b, role)
concept_a.add_arrow(arrow1)
concept_c = gel.Concept('c')
arrow2 = gel.Arrow(concept_c, role)
concept_a.add_arrow(arrow2)
return concept_a, [arrow1, arrow2]
def init_bot_graph():
graph = gel.KnowledgeBase('bot', 'top')
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.IndividualConcept('a'))
graph.add_role(gel.Role('r'))
graph.add_axiom('a', 'C', graph.is_a.iri)
graph.add_axiom('C', 'bot', graph.is_a.iri)
return graph
def test_graph_fix_existential_head_axiom(simple_graph):
concept_d = gel.Concept('D')
simple_graph.add_concept(concept_d)
existential_concept = simple_graph.get_concept('r.C')
assert existential_concept not in concept_d.is_a()
simple_graph.add_axiom('D', 'C', 'r')
assert existential_concept in concept_d.is_a()
def simple_graph():
graph = gel.KnowledgeBase('bot', 'top')
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.IndividualConcept('a'))
graph.add_role(gel.Role('r'))
graph.add_concept(gel.ExistentialConcept('r', 'C'))
graph.add_axiom('a', 'C', graph.is_a.iri)
return graph
def test_kb_far_existential_concept_is_unsatisfiable(empty_kb):
kb = empty_kb
kb.add_concept(gel.IndividualConcept('a'))
kb.add_concept(gel.IndividualConcept('b'))
kb.add_concept(gel.Concept('B'))
kb.add_role(gel.Role('r'))
kb.add_axiom('a', 'b', 'r')
kb.add_axiom('b', 'B', kb.is_a)
rB = gel.ExistentialConcept('r', 'B')
kb.add_concept(rB)
kb.add_axiom(rB, kb.bot, kb.is_a)
result = solve(kb)
assert not result['satisfiable']
def graph_complete_rule_5():
graph = gel.KnowledgeBase('bot', 'top')
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.Concept('D'))
graph.add_concept(gel.Concept('C1'))
graph.add_concept(gel.Concept('C2'))
graph.add_axiom('C', 'C1', graph.is_a)
graph.add_axiom('C1', 'C2', graph.is_a)
graph.add_concept(gel.Concept('D1'))
graph.add_axiom('D', 'D1', graph.is_a)
graph.add_role(gel.Role('i'))
graph.add_concept(gel.Concept('D-1'))
graph.add_axiom('D-1', 'D', 'i')
graph.add_concept(gel.IndividualConcept('a'))
graph.add_axiom('C2', 'a', graph.is_a)
graph.add_axiom('D1', 'a', graph.is_a)
graph.add_axiom('a', 'C', graph.is_a)
graph.add_axiom('a', 'D-1', graph.is_a)
return graph
def test_graph_add_axiom():
graph = gel.KnowledgeBase('bot', 'top')
graph.add_concept(gel.Concept('C'))
graph.add_concept(gel.Concept('D'))
assert graph.add_axiom('C', 'D', graph.is_a)
assert not graph.add_axiom('C', 'D', graph.is_a)