def checkConsistency(
inputDocument,
entailedDocument=None,
requiredDatatypes=[], # dt not impl
forbiddenDatatypes=[],
maxSeconds=5,
axiomTags=(),
inputFileName=None,
outputFileName=None):
"""An OWL consistency checker takes a document as input, and
returns one word being Consistent, Inconsistent, or Unknown.
An OWL consistency checker SHOULD report network errors
occurring during the computation of the imports closure.
-- from http://www.w3.org/TR/owl-test/#conformance
Search for an inconsistency & see what we find!
... Meanwhile, if we also have an "entailedDocument",
add its negation; Inconsistent==Entailed, etc.
"""
for dt in requiredDatatypes:
# if not supported, ... but they are ALL not supported right now!
raise UnsupportedDatatype, dt
kb = LX.kb.KB()
kb.firstOrder = True # use rdf(s,p,o) instead of p(s,o)
try:
kb.load(inputDocument)
if entailedDocument:
kb2 = LX.kb.KB()
kb2.firstOrder = True # use rdf(s,p,o) instead of p(s,o)
kb2.load(entailedDocument)
#print "Adding negated:", kb2
kb.add(LX.logic.NOT(kb2.asFormula()))
#print "Giving us:", kb
# possible huge performance gains by using subset of axioms (when that's not cheating)
# possible huge performance gains by puting kb [or just kb2 if present] into SOS
#kb.gather(prefixMap)
try:
LX.engine.otter.run(
kb,
includes=[axiomFile % tag for tag in axiomTags],
maxSeconds=maxSeconds,
inputFileName=inputFileName,
outputFileName=outputFileName)
return "Inconsistent"
except LX.engine.otter.SOSEmpty:
return "Consistent"
except LX.engine.otter.TimeoutBeforeAnyProof:
return "Unknown"
except LX.kb.UnsupportedDatatype, e:
raise UnsupportedDatatype, e
def checkConsistency(inputDocument,
entailedDocument=None,
requiredDatatypes=[], # dt not impl
forbiddenDatatypes=[],
maxSeconds=5,
axiomTags=(),
inputFileName=None,
outputFileName=None):
"""An OWL consistency checker takes a document as input, and
returns one word being Consistent, Inconsistent, or Unknown.
An OWL consistency checker SHOULD report network errors
occurring during the computation of the imports closure.
-- from http://www.w3.org/TR/owl-test/#conformance
Search for an inconsistency & see what we find!
... Meanwhile, if we also have an "entailedDocument",
add its negation; Inconsistent==Entailed, etc.
"""
for dt in requiredDatatypes:
# if not supported, ... but they are ALL not supported right now!
raise UnsupportedDatatype, dt
kb = LX.kb.KB()
kb.firstOrder = True # use rdf(s,p,o) instead of p(s,o)
try:
kb.load(inputDocument)
if entailedDocument:
kb2 = LX.kb.KB()
kb2.firstOrder = True # use rdf(s,p,o) instead of p(s,o)
kb2.load(entailedDocument)
#print "Adding negated:", kb2
kb.add(LX.logic.NOT(kb2.asFormula()))
#print "Giving us:", kb
# possible huge performance gains by using subset of axioms (when that's not cheating)
# possible huge performance gains by puting kb [or just kb2 if present] into SOS
#kb.gather(prefixMap)
try:
LX.engine.otter.run(kb,
includes=[axiomFile % tag for tag in axiomTags],
maxSeconds=maxSeconds,
inputFileName=inputFileName,
outputFileName=outputFileName)
return "Inconsistent"
except LX.engine.otter.SOSEmpty:
return "Consistent"
except LX.engine.otter.TimeoutBeforeAnyProof:
return "Unknown"
except LX.kb.UnsupportedDatatype, e:
raise UnsupportedDatatype, e
def p_axiom(t):
'''axiom : LPAREN tagList BODY sentence RPAREN'''
#print "Adding formula %s\n" % t[4]
kb.add(t[4])
def p_formulaList_more(t):
'''formulaList : formulaList formula PERIOD'''
#print "Adding formula %s\n" % t[2]
kb.add(t[2])
def p_axiom(t):
'''axiom : LPAREN tagList BODY sentence RPAREN'''
#print "Adding formula %s\n" % t[4]
kb.add(t[4])
def p_formulaList_more(t):
'''formulaList : formulaList formula PERIOD'''
#print "Adding formula %s\n" % t[2]
kb.add(t[2])