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# coding=utf-8
# Copyright 2021 The IDEA Authors. All rights reserved.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import collections
from typing import List, Dict, Tuple
def get_choice(spo_choice: list) -> tuple:
""" 把关系schema中的关系、实体获取出来
Args:
spo_choice (list): 关系schema
Returns:
tuple:
choice_ent (list)
choice_rel (list)
choice_head (list)
choice_tail (list)
entity2rel (dict)
"""
choice_head = []
choice_tail = []
choice_ent = []
choice_rel = []
entity2rel = collections.defaultdict(list) # "subject|object" -> [relation]
for head, rel, tail in spo_choice:
if head not in choice_head:
choice_head.append(head)
if tail not in choice_tail:
choice_tail.append(tail)
if head not in choice_ent:
choice_ent.append(head)
if tail not in choice_ent:
choice_ent.append(tail)
if rel not in choice_rel:
choice_rel.append(rel)
entity2rel[head, tail].append(rel)
return choice_ent, choice_rel, choice_head, choice_tail, entity2rel
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