wav2vec2-large-xlsr-cantonese / test_cer.py

upadte CER

b353b5b about 3 years ago

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4.76 kB

	# coding=utf-8
	# Copyright 2021 The HuggingFace Datasets 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.
	import unittest
	import cer

	cer = cer.CER()

	class TestCER(unittest.TestCase):
	def test_cer_case_senstive(self):
	refs = ['White House']
	preds = ['white house']
	# S = 2, D = 0, I = 0, N = 9, CER = 2 / 11
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.1818181818) < 1e-6)

	def test_cer_whitespace(self):
	refs = ['were wolf']
	preds = ['werewolf']
	# S = 0, D = 0, I = 1, N = 9, CER = 1 / 9
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.1111111) < 1e-6)

	# consecutive whitespaces case 0
	refs = ['werewolf']
	preds = ['weae wolf']
	# S = 1, D = 1, I = 0, N = 8, CER = 0.25
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.25) < 1e-6)

	# consecutive whitespaces case 1
	refs = ['were wolf']
	preds = ['were wolf']
	# S = 0, D = 0, I = 0, N = 9, CER = 0
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.0) < 1e-6)

	# consecutive whitespaces case 2
	refs = ['were wolf']
	preds = ['were wolf']
	# S = 0, D = 0, I = 0, N = 9, CER = 0
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.0) < 1e-6)

	def test_cer_sub(self):
	refs = ['werewolf']
	preds = ['weaewolf']
	# S = 1, D = 0, I = 0, N = 8, CER = 0.125
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.125) < 1e-6)

	def test_cer_del(self):
	refs = ['werewolf']
	preds = ['wereawolf']
	# S = 0, D = 1, I = 0, N = 8, CER = 0.125
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.125) < 1e-6)

	def test_cer_insert(self):
	refs = ['werewolf']
	preds = ['wereolf']
	# S = 0, D = 0, I = 1, N = 8, CER = 0.125
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.125) < 1e-6)

	def test_cer_equal(self):
	refs = ['werewolf']
	char_error_rate = cer.compute(predictions=refs, references=refs)
	self.assertEqual(char_error_rate, 0.0)

	def test_cer_list_of_seqs(self):
	refs = ['werewolf', 'I am your father']
	char_error_rate = cer.compute(predictions=refs, references=refs)
	self.assertEqual(char_error_rate, 0.0)

	refs = ['werewolf', 'I am your father', 'doge']
	preds = ['werxwolf', 'I am your father', 'doge']
	# S = 1, D = 0, I = 0, N = 28, CER = 1 / 28
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.03571428) < 1e-6)

	def test_cer_unicode(self):
	refs = [u'我能吞下玻璃而不伤身体']
	preds = [u' 能吞虾玻璃而不霜身体啦']
	# S = 3, D = 2, I = 0, N = 11
	# CER = 5 / 11
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.4545454545) < 1e-6)

	refs = [u'我能吞', u'下玻璃而不伤身体']
	preds = [u'我能吞下玻璃', u'而不伤身体']
	# S = 0, D = 5, I = 0, N = 11
	# CER = 5 / 11
	char_error_rate = cer.compute(predictions=preds, references=refs)
	self.assertTrue(abs(char_error_rate - 0.454545454545) < 1e-6)

	refs = [u'我能吞下玻璃而不伤身体']
	char_error_rate = cer.compute(predictions=refs, references=refs)
	self.assertFalse(char_error_rate, 0.0)

	def test_cer_empty(self):
	refs = ''
	preds = 'Hypothesis'
	with self.assertRaises(ValueError):
	char_error_rate = cer.compute(predictions=preds, references=refs)

	if __name__ == '__main__':
	unittest.main()