class SentenceFeatureGenerator(EdgeFeatureGenerator):
"""
Generate features for each sentence containing an edge
"""
def __init__(self, feature_set, training_mode=True):
self.feature_set = feature_set
"""the feature set for the dataset"""
self.training_mode = training_mode
"""whether the mode is training or testing"""
self.token_feature_generator = TokenFeatureGenerator(
feature_set, training_mode)
"""an instance of TokenFeatureGenerator"""
def generate(self, dataset):
for edge in dataset.edges():
sentence = edge.part.sentences[edge.sentence_id]
text_count = {}
for token in sentence:
ann_types = self.token_feature_generator.annotated_types(
token, edge)
for ann in ann_types:
if ann not in text_count.keys():
text_count[ann] = 0
text_count[ann] = text_count[ann] + 1
for key, value in text_count.items():
feature_name = '5_' + key + '_[0]'
self.add_to_feature_set(edge, feature_name, value=value)
class SentenceFeatureGenerator(EdgeFeatureGenerator):
"""
Generate features for each sentence containing an edge
"""
def __init__(self, feature_set, training_mode=True):
self.feature_set = feature_set
"""the feature set for the dataset"""
self.training_mode = training_mode
"""whether the mode is training or testing"""
self.token_feature_generator = TokenFeatureGenerator(
feature_set, training_mode)
"""an instance of TokenFeatureGenerator"""
def generate(self, dataset):
for edge in dataset.edges():
sentence = edge.part.sentences[edge.sentence_id]
text_count = {}
for token in sentence:
ann_types = self.token_feature_generator.annotated_types(
token, edge)
for ann in ann_types:
if ann not in text_count.keys():
text_count[ann] = 0
text_count[ann] = text_count[ann] + 1
for key, value in text_count.items():
feature_name = '5_' + key + '_[0]'
self.add_to_feature_set(edge, feature_name, value=value)
class PathFeatureGenerator(EdgeFeatureGenerator):
"""
The length of the path from entity 1 to entity 2 and token features for the
two tokens at the terminal of the path
"""
def __init__(self, feature_set, graphs, training_mode=True):
self.feature_set = feature_set
"""the feature set for the dataset"""
self.graphs = graphs
"""a dictionary of graphs to avoid recomputation of path"""
self.training_mode = training_mode
"""whether the mode is training or testing"""
self.stemmer = PorterStemmer()
"""an instance of PorterStemmer"""
self.token_feature_generator = TokenFeatureGenerator(feature_set, training_mode)
"""an instance of TokenFeatureGenerator"""
def generate(self, dataset):
for edge in dataset.edges():
head1 = edge.entity1.head_token
head2 = edge.entity2.head_token
sentence = edge.part.sentences[edge.sentence_id]
path = []
path = get_path(head1, head2, edge.part, edge.sentence_id, self.graphs)
if len(path)==0:
path = [head1, head2]
self.path_length_features(path, edge)
self.token_feature_generator.token_features(path[0], 'token_term_1_', edge)
self.token_feature_generator.token_features(path[-1], 'token_term_2_', edge)
self.path_dependency_features(path, edge)
base_words = ['interact', 'bind', 'coactivator', 'complex', 'mediate']
words = []
for word in base_words:
words.append(self.stemmer.stem(word))
self.path_constituents(path, edge, words)
self.path_grams(2, path, edge)
self.path_grams(3, path, edge)
self.path_grams(4, path, edge)
self.path_edge_features(path, edge)
def path_length_features(self, path, edge):
feature_name_1 = '45_len_tokens_' + str(len(path)) + '_[0]'
feature_name_2 = '46_len_[0]'
self.add_to_feature_set(edge, feature_name_1)
self.add_to_feature_set(edge, feature_name_2, len(path))
def path_constituents(self, path, edge, words):
for token in path:
if self.stemmer.stem(token.word) in words:
feature_name_1 = '47_word_in_path_' + self.stemmer.stem(token.word) + '_[0]'
self.add_to_feature_set(edge, feature_name_1)
def path_dependency_features(self, path, edge):
for i in range(len(path)-1):
token1 = path[i]
token2 = path[i+1]
for dep in token1.features['dependency_to']:
if dep[0]==token2:
feature_name = '48_dep_'+dep[1]+'_forward_[0]'
self.add_to_feature_set(edge, feature_name)
for dep in token2.features['dependency_to']:
if dep[0]==token1:
feature_name = '49_dep_'+dep[1]+'_reverse_[0]'
self.add_to_feature_set(edge, feature_name)
for i in range(1, len(path)-1):
token = path[i]
feature_name_1 = '50_internal_pos_' + token.features['pos'] + '_[0]'
feature_name_2 = '51_internal_masked_txt_' + token.masked_text(edge.part) + '_[0]'
feature_name_3 = '52_internal_txt_' + token.word + '_[0]'
feature_name_4 = '53_internal_stem_' + self.stemmer.stem(token.word) + '_[0]'
self.add_to_feature_set(edge, feature_name_1)
self.add_to_feature_set(edge, feature_name_2)
self.add_to_feature_set(edge, feature_name_3)
self.add_to_feature_set(edge, feature_name_4)
for i in range(2, len(path)-1):
token1 = path[i]
token2 = path[i+1]
for dep in token1.features['dependency_to']:
if dep[0]==token2:
feature_name = '54_internal_dep_'+dep[1]+'_forward_[0]'
self.add_to_feature_set(edge, feature_name)
for dep in token2.features['dependency_to']:
if dep[0]==token1:
feature_name = '55_internal_dep_'+dep[1]+'_reverse_[0]'
self.add_to_feature_set(edge, feature_name)
def build_walk_paths(self, path, edge):
internal_types = ''
for token in path:
ann_types = self.token_feature_generator.annotated_types(token, edge)
for ann in ann_types:
internal_types += '_'+ann
internal_types += '_'
feature_name = '56_token_path'+internal_types+'_[0]'
self.add_to_feature_set(edge, feature_name)
def path_grams(self, n, path, edge):
token1 = path[0]
token2 = path[-1]
token1_anns = self.token_feature_generator.annotated_types(token1, edge)
token2_anns = self.token_feature_generator.annotated_types(token2, edge)
self.build_walk_paths(path, edge)
all_walks = build_walks(path)
for i in range(len(all_walks)):
dir_grams = ''
for j in range(len(path)-1):
current_walk = all_walks[i]
if current_walk[j][0].features['dependency_from'][0]==path[i]:
dir_grams += 'F'
else:
dir_grams += 'R'
if i>=n-1:
style_gram = ''
style_gram = dir_grams[i-n+1:i+1]
edge_gram = 'dep_gram_' + style_gram
for k in range(1, n):
token = edge.part.sentences[edge.sentence_id][(path[i-(n-1)+k]).features['id']-1]
self.token_feature_generator.token_features(token, 'tok_'+style_gram, edge)
for k in range(n):
dep = current_walk[i-(n-1)+k][1]
feature_name = '57_dep_'+style_gram+'_'+str(k)+'_'+dep+'_[0]'
self.add_to_feature_set(edge, feature_name)
edge_gram += '_' + dep
feature_name = '58_'+edge_gram+'_[0]'
self.add_to_feature_set(edge, feature_name)
for ann1 in token1_anns:
for ann2 in token2_anns:
feature_name = '59_'+ann1+'_'+edge_gram+'_'+ann2+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '60_edge_directions_' + dir_grams + '_[0]'
self.add_to_feature_set(edge, feature_name)
def path_edge_features(self, path, edge):
head1 = edge.entity1.head_token
head2 = edge.entity2.head_token
dependency_list = []
for i in range(len(path)-1):
token1 = path[i]
token2 = path[i+1]
dependency_list.append(token2.features['dependency_from'])
dependency_list.append(token1.features['dependency_from'])
for dependency in dependency_list:
feature_name = '61_dep_'+dependency[1]+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '62_txt_'+dependency[0].masked_text(edge.part)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '63_pos_'+dependency[0].features['pos']+'_[0]'
self.add_to_feature_set(edge, feature_name)
token1 = dependency[0]
ann_types_1 = self.token_feature_generator.annotated_types(token1, edge)
for ann in ann_types_1:
feature_name = '64_ann_type_'+ann+'_[0]'
self.add_to_feature_set(edge, feature_name)
g_text = dependency[0].masked_text(edge.part)
g_pos = dependency[0].features['pos']
g_at = 'no_ann_type'
for dep in dependency[0].features['dependency_to']:
feature_name = '65_'+dep[1]+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '66_txt_'+dep[0].masked_text(edge.part)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '67_pos_'+dep[0].features['pos']+'_[0]'
self.add_to_feature_set(edge, feature_name)
token2 = dep[0]
ann_types_2 = self.token_feature_generator.annotated_types(token2, edge)
for ann in ann_types_2:
feature_name = '68_ann_type_'+ann+'_[0]'
self.add_to_feature_set(edge, feature_name)
d_text = token2.masked_text(edge.part)
d_pos = token2.features['pos']
d_at = 'no_ann_type'
feature_name = '69_gov_'+g_text+'_'+d_text+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '70_gov_'+g_pos+'_'+d_pos+'_[0]'
self.add_to_feature_set(edge, feature_name)
for ann1 in ann_types_1:
for ann2 in ann_types_2:
feature_name = '71_gov_'+ann1+'_'+ann2+'_[0]'
self.add_to_feature_set(edge, feature_name)
for ann1 in ann_types_1:
feature_name = '72_triple_'+ann1+'_'+dependency[1]+'_'+d_at+'_[0]'
self.add_to_feature_set(edge, feature_name)