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preprocess.py
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preprocess.py
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import torch
import os
import numpy as np
def read_entity_from_id(filename='./data/WN18RR/entity2id.txt'):
entity2id = {}
with open(filename, 'r') as f:
for line in f:
if len(line.strip().split()) > 1:
entity, entity_id = line.strip().split(
)[0].strip(), line.strip().split()[1].strip()
entity2id[entity] = int(entity_id)
return entity2id
def read_relation_from_id(filename='./data/WN18RR/relation2id.txt'):
relation2id = {}
with open(filename, 'r') as f:
for line in f:
if len(line.strip().split()) > 1:
relation, relation_id = line.strip().split(
)[0].strip(), line.strip().split()[1].strip()
relation2id[relation] = int(relation_id)
return relation2id
def init_embeddings(entity_file, relation_file):
entity_emb, relation_emb = [], []
with open(entity_file) as f:
for line in f:
entity_emb.append([float(val) for val in line.strip().split()])
with open(relation_file) as f:
for line in f:
relation_emb.append([float(val) for val in line.strip().split()])
return np.array(entity_emb, dtype=np.float32), np.array(relation_emb, dtype=np.float32)
def parse_line(line):
line = line.strip().split()
e1, relation, e2 = line[0].strip(), line[1].strip(), line[2].strip()
return e1, relation, e2
def load_data(filename, entity2id, relation2id, is_unweigted=False, directed=True):
with open(filename) as f:
lines = f.readlines()
# this is list for relation triples
triples_data = []
# for sparse tensor, rows list contains corresponding row of sparse tensor, cols list contains corresponding
# columnn of sparse tensor, data contains the type of relation
# Adjacecny matrix of entities is undirected, as the source and tail entities should know, the relation
# type they are connected with
rows, cols, data = [], [], []
unique_entities = set()
for line in lines:
e1, relation, e2 = parse_line(line)
unique_entities.add(e1)
unique_entities.add(e2)
triples_data.append(
(entity2id[e1], relation2id[relation], entity2id[e2]))
if not directed:
# Connecting source and tail entity
rows.append(entity2id[e1])
cols.append(entity2id[e2])
if is_unweigted:
data.append(1)
else:
data.append(relation2id[relation])
# Connecting tail and source entity
rows.append(entity2id[e2])
cols.append(entity2id[e1])
if is_unweigted:
data.append(1)
else:
data.append(relation2id[relation])
print("number of unique_entities ->", len(unique_entities))
return triples_data, (rows, cols, data), list(unique_entities)
def build_data(path='./data/WN18RR/', is_unweigted=False, directed=True):
entity2id = read_entity_from_id(path + 'entity2id.txt')
relation2id = read_relation_from_id(path + 'relation2id.txt')
# Adjacency matrix only required for training phase
# Currenlty creating as unweighted, undirected
train_triples, train_adjacency_mat, unique_entities_train = load_data(os.path.join(
path, 'train.txt'), entity2id, relation2id, is_unweigted, directed)
validation_triples, valid_adjacency_mat, unique_entities_validation = load_data(
os.path.join(path, 'valid.txt'), entity2id, relation2id, is_unweigted, directed)
test_triples, test_adjacency_mat, unique_entities_test = load_data(os.path.join(
path, 'test.txt'), entity2id, relation2id, is_unweigted, directed)
id2entity = {v: k for k, v in entity2id.items()}
id2relation = {v: k for k, v in relation2id.items()}
left_entity, right_entity = {}, {}
with open(os.path.join(path, 'train.txt')) as f:
lines = f.readlines()
for line in lines:
e1, relation, e2 = parse_line(line)
# Count number of occurences for each (e1, relation)
if relation2id[relation] not in left_entity:
left_entity[relation2id[relation]] = {}
if entity2id[e1] not in left_entity[relation2id[relation]]:
left_entity[relation2id[relation]][entity2id[e1]] = 0
left_entity[relation2id[relation]][entity2id[e1]] += 1
# Count number of occurences for each (relation, e2)
if relation2id[relation] not in right_entity:
right_entity[relation2id[relation]] = {}
if entity2id[e2] not in right_entity[relation2id[relation]]:
right_entity[relation2id[relation]][entity2id[e2]] = 0
right_entity[relation2id[relation]][entity2id[e2]] += 1
left_entity_avg = {}
for i in range(len(relation2id)):
left_entity_avg[i] = sum(
left_entity[i].values()) * 1.0 / len(left_entity[i])
right_entity_avg = {}
for i in range(len(relation2id)):
right_entity_avg[i] = sum(
right_entity[i].values()) * 1.0 / len(right_entity[i])
headTailSelector = {}
for i in range(len(relation2id)):
headTailSelector[i] = 1000 * right_entity_avg[i] / \
(right_entity_avg[i] + left_entity_avg[i])
return (train_triples, train_adjacency_mat), (validation_triples, valid_adjacency_mat), (test_triples, test_adjacency_mat), \
entity2id, relation2id, headTailSelector, unique_entities_train