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dependencies.py
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dependencies.py
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stanford_dependency_hierarchy = {"dep":
{"aux":{"auxpass":{},
"cop":{}},
"arg": {"agent":{},
"comp":{"acomp":{},
"attr":{},
"ccomp":{},
"xcomp":{},
"compl":{},
"obj":{"dobj":{},
"iobj":{},
"pobj":{}},
"mark":{},
"rel":{}},
"subj":{"nsubj":{"nsubjpass":{}},
"csubj":{}}},
"cc":{},
"conj":{},
"expl":{},
"mod":{"abbrev":{},
"amod":{},
"appos":{},
"advcl":{},
"purpcl":{},
"det":{},
"predet":{},
"preconj":{},
"infmod":{},
"partmod":{},
"advmod":{"neg":{}},
"rcmod":{},
"quantmod":{},
"tmod":{},
"measure":{},
"nn":{},
"num":{},
"number":{},
"prep":{},
"poss":{},
"possessive":{},
"prt":{}},
"parataxis":{},
"punct":{},
"ref":{},
"sdep":{"xsubj":{}}
}
}
class StanfordDependencyHierarchy:
"""
Class that encodes the types of dependencies.
"""
def __init__(self, hierarchy=stanford_dependency_hierarchy):
self.hierarchy=hierarchy
self.flatMap = {}
self.parentToChildren = {}
activeSet = [self.hierarchy]
while len(activeSet) != 0:
newActiveSet = []
for item in activeSet:
for key, mapValue in item.iteritems():
self.flatMap[key] = mapValue
self.parentToChildren[key] = sorted(list(mapValue.keys()))
newActiveSet.append(mapValue)
activeSet = newActiveSet
self.ancestorToDescendents = {}
for key, mapValue in self.flatMap.iteritems():
descendents = []
activeSet = [mapValue]
while len(activeSet) != 0:
newActiveSet = []
for item in activeSet:
for childKey, mapValue in item.iteritems():
newActiveSet.extend(mapValue.values())
descendents.append(childKey)
activeSet = newActiveSet
self.ancestorToDescendents[key] = sorted(descendents)
def isa(self, relation, ancestor):
return relation in self.ancestorToDescendents[ancestor]