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138 lines
5.3 KiB
Python
138 lines
5.3 KiB
Python
from __future__ import unicode_literals
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import pytest
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from spacy.attrs import DEP, HEAD
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import numpy
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from spacy.syntax.nonproj import ancestors, contains_cycle, is_nonproj_arc, is_nonproj_tree, PseudoProjectivity
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def test_ancestors():
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tree = [1,2,2,4,5,2,2]
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cyclic_tree = [1,2,2,4,5,3,2]
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partial_tree = [1,2,2,4,5,None,2]
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multirooted_tree = [3,2,0,3,3,7,7,3,7,10,7,10,11,12,18,16,18,17,12,3]
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assert([ a for a in ancestors(3,tree) ] == [4,5,2])
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assert([ a for a in ancestors(3,cyclic_tree) ] == [4,5,3,4,5,3,4])
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assert([ a for a in ancestors(3,partial_tree) ] == [4,5,None])
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assert([ a for a in ancestors(17,multirooted_tree) ] == [])
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def test_contains_cycle():
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tree = [1,2,2,4,5,2,2]
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cyclic_tree = [1,2,2,4,5,3,2]
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partial_tree = [1,2,2,4,5,None,2]
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multirooted_tree = [3,2,0,3,3,7,7,3,7,10,7,10,11,12,18,16,18,17,12,3]
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assert(contains_cycle(tree) == None)
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assert(contains_cycle(cyclic_tree) == set([3,4,5]))
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assert(contains_cycle(partial_tree) == None)
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assert(contains_cycle(multirooted_tree) == None)
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def test_is_nonproj_arc():
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nonproj_tree = [1,2,2,4,5,2,7,4,2]
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partial_tree = [1,2,2,4,5,None,7,4,2]
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multirooted_tree = [3,2,0,3,3,7,7,3,7,10,7,10,11,12,18,16,18,17,12,3]
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assert(is_nonproj_arc(0,nonproj_tree) == False)
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assert(is_nonproj_arc(1,nonproj_tree) == False)
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assert(is_nonproj_arc(2,nonproj_tree) == False)
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assert(is_nonproj_arc(3,nonproj_tree) == False)
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assert(is_nonproj_arc(4,nonproj_tree) == False)
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assert(is_nonproj_arc(5,nonproj_tree) == False)
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assert(is_nonproj_arc(6,nonproj_tree) == False)
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assert(is_nonproj_arc(7,nonproj_tree) == True)
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assert(is_nonproj_arc(8,nonproj_tree) == False)
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assert(is_nonproj_arc(7,partial_tree) == False)
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assert(is_nonproj_arc(17,multirooted_tree) == False)
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assert(is_nonproj_arc(16,multirooted_tree) == True)
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def test_is_nonproj_tree():
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proj_tree = [1,2,2,4,5,2,7,5,2]
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nonproj_tree = [1,2,2,4,5,2,7,4,2]
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partial_tree = [1,2,2,4,5,None,7,4,2]
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multirooted_tree = [3,2,0,3,3,7,7,3,7,10,7,10,11,12,18,16,18,17,12,3]
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assert(is_nonproj_tree(proj_tree) == False)
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assert(is_nonproj_tree(nonproj_tree) == True)
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assert(is_nonproj_tree(partial_tree) == False)
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assert(is_nonproj_tree(multirooted_tree) == True)
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def deprojectivize(proj_heads, deco_labels, EN):
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slen = len(proj_heads)
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sent = EN.tokenizer.tokens_from_list(['whatever'] * slen)
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rel_proj_heads = [ head-i for i,head in enumerate(proj_heads) ]
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labelids = [ EN.vocab.strings[label] for label in deco_labels ]
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pairs = list(zip(rel_proj_heads,labelids))
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parse = numpy.asarray(pairs, dtype=numpy.int32)
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sent.from_array([HEAD,DEP],parse)
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PseudoProjectivity.deprojectivize(sent)
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parse = sent.to_array([HEAD,DEP])
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deproj_heads = [ i+head for i,head in enumerate(parse[:,0]) ]
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undeco_labels = [ EN.vocab.strings[int(labelid)] for labelid in parse[:,1] ]
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return deproj_heads, undeco_labels
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@pytest.mark.models
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def test_pseudoprojectivity(EN):
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tree = [1,2,2]
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nonproj_tree = [1,2,2,4,5,2,7,4,2]
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labels = ['det','nsubj','root','det','dobj','aux','nsubj','acl','punct']
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nonproj_tree2 = [9,1,3,1,5,6,9,8,6,1,6,12,13,10,1]
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labels2 = ['advmod','root','det','nsubj','advmod','det','dobj','det','nmod','aux','nmod','advmod','det','amod','punct']
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assert(PseudoProjectivity.decompose('X||Y') == ('X','Y'))
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assert(PseudoProjectivity.decompose('X') == ('X',''))
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assert(PseudoProjectivity.is_decorated('X||Y') == True)
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assert(PseudoProjectivity.is_decorated('X') == False)
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PseudoProjectivity._lift(0,tree)
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assert(tree == [2,2,2])
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np_arc = PseudoProjectivity._get_smallest_nonproj_arc(nonproj_tree)
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assert(np_arc == 7)
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np_arc = PseudoProjectivity._get_smallest_nonproj_arc(nonproj_tree2)
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assert(np_arc == 10)
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proj_heads, deco_labels = PseudoProjectivity.projectivize(nonproj_tree,labels)
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assert(proj_heads == [1,2,2,4,5,2,7,5,2])
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assert(deco_labels == ['det','nsubj','root','det','dobj','aux','nsubj','acl||dobj','punct'])
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deproj_heads, undeco_labels = deprojectivize(proj_heads,deco_labels,EN)
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assert(deproj_heads == nonproj_tree)
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assert(undeco_labels == labels)
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proj_heads, deco_labels = PseudoProjectivity.projectivize(nonproj_tree2,labels2)
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assert(proj_heads == [1,1,3,1,5,6,9,8,6,1,9,12,13,10,1])
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assert(deco_labels == ['advmod||aux','root','det','nsubj','advmod','det','dobj','det','nmod','aux','nmod||dobj','advmod','det','amod','punct'])
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deproj_heads, undeco_labels = deprojectivize(proj_heads,deco_labels,EN)
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assert(deproj_heads == nonproj_tree2)
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assert(undeco_labels == labels2)
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# if decoration is wrong such that there is no head with the desired label
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# the structure is kept and the label is undecorated
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proj_heads = [1,2,2,4,5,2,7,5,2]
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deco_labels = ['det','nsubj','root','det','dobj','aux','nsubj','acl||iobj','punct']
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deproj_heads, undeco_labels = deprojectivize(proj_heads,deco_labels,EN)
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assert(deproj_heads == proj_heads)
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assert(undeco_labels == ['det','nsubj','root','det','dobj','aux','nsubj','acl','punct'])
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# if there are two potential new heads, the first one is chosen even if it's wrong
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proj_heads = [1,1,3,1,5,6,9,8,6,1,9,12,13,10,1]
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deco_labels = ['advmod||aux','root','det','aux','advmod','det','dobj','det','nmod','aux','nmod||dobj','advmod','det','amod','punct']
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deproj_heads, undeco_labels = deprojectivize(proj_heads,deco_labels,EN)
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assert(deproj_heads == [3,1,3,1,5,6,9,8,6,1,6,12,13,10,1])
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assert(undeco_labels == ['advmod','root','det','aux','advmod','det','dobj','det','nmod','aux','nmod','advmod','det','amod','punct'])
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