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101 lines
3.9 KiB
101 lines
3.9 KiB
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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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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"""Test decoders."""
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import unittest
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from deepspeech.decoders import decoders_deprecated as decoder
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class TestDecoders(unittest.TestCase):
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def setUp(self):
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self.vocab_list = ["\'", ' ', 'a', 'b', 'c', 'd']
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self.beam_size = 20
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self.probs_seq1 = [[
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0.06390443, 0.21124858, 0.27323887, 0.06870235, 0.0361254,
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0.18184413, 0.16493624
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], [
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0.03309247, 0.22866108, 0.24390638, 0.09699597, 0.31895462,
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0.0094893, 0.06890021
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], [
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0.218104, 0.19992557, 0.18245131, 0.08503348, 0.14903535,
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0.08424043, 0.08120984
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], [
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0.12094152, 0.19162472, 0.01473646, 0.28045061, 0.24246305,
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0.05206269, 0.09772094
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], [
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0.1333387, 0.00550838, 0.00301669, 0.21745861, 0.20803985,
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0.41317442, 0.01946335
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], [
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0.16468227, 0.1980699, 0.1906545, 0.18963251, 0.19860937,
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0.04377724, 0.01457421
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]]
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self.probs_seq2 = [[
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0.08034842, 0.22671944, 0.05799633, 0.36814645, 0.11307441,
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0.04468023, 0.10903471
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], [
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0.09742457, 0.12959763, 0.09435383, 0.21889204, 0.15113123,
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0.10219457, 0.20640612
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], [
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0.45033529, 0.09091417, 0.15333208, 0.07939558, 0.08649316,
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0.12298585, 0.01654384
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], [
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0.02512238, 0.22079203, 0.19664364, 0.11906379, 0.07816055,
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0.22538587, 0.13483174
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], [
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0.17928453, 0.06065261, 0.41153005, 0.1172041, 0.11880313,
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0.07113197, 0.04139363
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], [
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0.15882358, 0.1235788, 0.23376776, 0.20510435, 0.00279306,
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0.05294827, 0.22298418
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]]
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self.greedy_result = ["ac'bdc", "b'da"]
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self.beam_search_result = ['acdc', "b'a"]
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def test_greedy_decoder_1(self):
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bst_result = decoder.ctc_greedy_decoder(self.probs_seq1,
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self.vocab_list)
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self.assertEqual(bst_result, self.greedy_result[0])
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def test_greedy_decoder_2(self):
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bst_result = decoder.ctc_greedy_decoder(self.probs_seq2,
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self.vocab_list)
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self.assertEqual(bst_result, self.greedy_result[1])
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def test_beam_search_decoder_1(self):
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beam_result = decoder.ctc_beam_search_decoder(
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probs_seq=self.probs_seq1,
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beam_size=self.beam_size,
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vocabulary=self.vocab_list)
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self.assertEqual(beam_result[0][1], self.beam_search_result[0])
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def test_beam_search_decoder_2(self):
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beam_result = decoder.ctc_beam_search_decoder(
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probs_seq=self.probs_seq2,
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beam_size=self.beam_size,
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vocabulary=self.vocab_list)
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self.assertEqual(beam_result[0][1], self.beam_search_result[1])
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def test_beam_search_decoder_batch(self):
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beam_results = decoder.ctc_beam_search_decoder_batch(
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probs_split=[self.probs_seq1, self.probs_seq2],
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beam_size=self.beam_size,
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vocabulary=self.vocab_list,
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num_processes=24)
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self.assertEqual(beam_results[0][0][1], self.beam_search_result[0])
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self.assertEqual(beam_results[1][0][1], self.beam_search_result[1])
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if __name__ == '__main__':
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unittest.main()
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