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# Copyright 2022 The HuggingFace Evaluate Authors
#
# 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.
"""Exact match test for model comparison."""
import datasets
import numpy as np
import evaluate
_DESCRIPTION = """
Returns the rate at which the predictions of one model exactly match those of another model.
"""
_KWARGS_DESCRIPTION = """
Args:
predictions1 (`list` of `int`): Predicted labels for model 1.
predictions2 (`list` of `int`): Predicted labels for model 2.
Returns:
exact_match (`float`): Dictionary containing exact_match rate. Possible values are between 0.0 and 1.0, inclusive.
Examples:
>>> exact_match = evaluate.load("exact_match", module_type="comparison")
>>> results = exact_match.compute(predictions1=[1, 1, 1], predictions2=[1, 1, 1])
>>> print(results)
{'exact_match': 1.0}
"""
_CITATION = """
"""
@evaluate.utils.file_utils.add_start_docstrings(_DESCRIPTION, _KWARGS_DESCRIPTION)
class ExactMatch(evaluate.Comparison):
def _info(self):
return evaluate.ComparisonInfo(
module_type="comparison",
description=_DESCRIPTION,
citation=_CITATION,
inputs_description=_KWARGS_DESCRIPTION,
features=datasets.Features(
{
"predictions1": datasets.Value("int64"),
"predictions2": datasets.Value("int64"),
}
),
)
def _compute(self, predictions1, predictions2):
score_list = [p1 == p2 for p1, p2 in zip(predictions1, predictions2)]
return {"exact_match": np.mean(score_list)}
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