63 lines
2.3 KiB
Python
63 lines
2.3 KiB
Python
# Copyright 2024 Bytedance Ltd. and/or its affiliates
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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def extract_solution(solution_str, method='strict'):
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assert method in ['strict', 'flexible']
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if method == 'strict':
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# this also tests the formatting of the model
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solution = re.search("#### (\\-?[0-9\\.\\,]+)", solution_str)
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if solution is None:
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final_answer = None
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else:
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final_answer = solution.group(0)
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final_answer = final_answer.split('#### ')[1].replace(',', '').replace('$', '')
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elif method == 'flexible':
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answer = re.findall("(\\-?[0-9\\.\\,]+)", solution_str)
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final_answer = None
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if len(answer) == 0:
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# no reward is there is no answer
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pass
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else:
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invalid_str = ['', '.']
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# find the last number that is not '.'
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for final_answer in reversed(answer):
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if final_answer not in invalid_str:
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break
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return final_answer
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def compute_score(solution_str, ground_truth, method='strict', format_score=0., score=1.):
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"""The scoring function for GSM8k.
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Reference: Trung, Luong, et al. "Reft: Reasoning with reinforced fine-tuning." Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers). 2024.
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Args:
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solution_str: the solution text
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ground_truth: the ground truth
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method: the method to extract the solution, choices are 'strict' and 'flexible'
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format_score: the score for the format
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score: the score for the correct answer
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"""
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answer = extract_solution(solution_str=solution_str, method=method)
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if answer is None:
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return 0
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else:
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if answer == ground_truth:
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return score
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else:
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return format_score |