def add_child(self, child):
"""Add a child Papfunc_SemanticNode to a Papfunc_SemanticNode.
This method overrides the add_child method from SemanticNode to
enforce the constraint that the child parameter must be a Papfunc_SemanticNode
Args:
child: the child Papfunc_SemanticNode
"""
assert_type(child, Papfunc_SemanticNode)
SemanticNode.add_child(self, child)
xml_string = '''
<ccg>
<lf start="0" span="1" word="dog" lemma="dog" pos="NN" chunk="I-NP" entity="O" cat="N" />
</ccg>
'''
syntactic_tree = SyntacticTree.parse_tree_from_xml_string(xml_string)
vecfilepref = test_vector_file_prefix
matfilepref = test_matrix_file_prefix
vecspace = Space.build(data = vecfilepref + ".dm",
rows = vecfilepref + ".rows",
format = "dm")
matspace = Space.build(data = matfilepref + ".dm",
rows = matfilepref + ".rows",
format = "dm")
semnode = SemanticNode.create_semantic_node(syntactic_tree.root,None)
papnode = Papfunc_SemanticNode.create_papfunc_node(semnode,vecspace,matspace)
print "*****"
print "Syntactic tree:", semnode
print "Symbolic representation:", papnode._matrep
print "Numeric representation:"
for x in papnode._numrep: print x
# SECOND TEST
xml_string = '''
<ccg>
<rule type="fa" cat="NP[nb]">
<lf start="0" span="1" word="A" lemma="a" pos="DT" chunk="I-NP" entity="O" cat="NP[nb]/N" />
<rule type="fa" cat="N">
<lf start="1" span="1" word="dog" lemma="dog" pos="NN" chunk="I-NP" entity="O" cat="N/N" />
def _syntactic_node_2_semantic_node(syntactic_node, vector_space,
composition_model, normed=True):
"""Create a SemanticNode from a SyntacticNode recursively
Args:
syntactic_node: the input syntatic_node
vector_space: a vector space where the lexical vectors can be retrieved
composition_model: the compositional model, with which the vector
representations of phrases are computed (the compositional model
should be either WeightedAdditive, Multiplicative or FullAdditive)
normed: a boolean value indicating whether the lexical vectors should be
normalized or not
Returns:
the semantic node
"""
# if the node is a terminal node:
# - retrieve the lexical vector
# if the node is non-terminal
# - recursively apply this function to the child nodes to get the vector
# representations of the child nodes
# - use the composition model, and the vectors of the children to compute
# the vector of the current node
#
if syntactic_node.is_terminal():
new_node = SemanticNode.create_semantic_node(syntactic_node, None)
try:
row_vector = vector_space.get_row(syntactic_node._word)
if normed:
new_node._vector = RowNormalization().apply(row_vector)
#print "shouldn't be here"
else:
new_node._vector = row_vector
# print new_node._vector
except KeyError:
#print "missing word:", syntactic_node._word
matrix_type = type(vector_space.cooccurrence_matrix)
vector_shape = (1,vector_space.cooccurrence_matrix.shape[1])
if isinstance(composition_model, Multiplicative):
new_node._vector = matrix_type(np.ones(vector_shape,
dtype=np.float))
else:
new_node._vector = matrix_type(np.zeros(vector_shape,
dtype=np.float))
else:
new_node = SemanticNode(syntactic_node.label, None)
for child in syntactic_node._children:
new_child = _syntactic_node_2_semantic_node(child, vector_space,
composition_model, normed)
new_node.add_child(new_child)
new_vector = new_node.get_child(0).vector
# print new_node
for i in range(1,len(new_node._children)):
new_vector = composition_model._compose(new_vector,
new_node.get_child(i).vector)
new_node.vector = new_vector
#print syntactic_node.get_surface_string()
#print new_node.vector[0,0]
return new_node
