Add more test cases and make DP more clear.

pull/2/head
yangyaming 7 years ago
parent 14d2fb795c
commit 04970705d6

@ -16,8 +16,8 @@ import tarfile
import argparse import argparse
import soundfile import soundfile
import json import json
from paddle.v2.dataset.common import md5file
import codecs import codecs
from paddle.v2.dataset.common import md5file
DATA_HOME = os.path.expanduser('~/.cache/paddle/dataset/speech') DATA_HOME = os.path.expanduser('~/.cache/paddle/dataset/speech')

@ -41,15 +41,17 @@ def _levenshtein_distance(ref, hyp):
# calculate levenshtein distance # calculate levenshtein distance
for i in xrange(1, m + 1): for i in xrange(1, m + 1):
distance[i % 2][0] = i prev_row_idx = (i - 1) % 2
cur_row_idx = i % 2
distance[cur_row_idx][0] = i
for j in xrange(1, n + 1): for j in xrange(1, n + 1):
if ref[i - 1] == hyp[j - 1]: if ref[i - 1] == hyp[j - 1]:
distance[i % 2][j] = distance[(i - 1) % 2][j - 1] distance[cur_row_idx][j] = distance[prev_row_idx][j - 1]
else: else:
s_num = distance[(i - 1) % 2][j - 1] + 1 s_num = distance[prev_row_idx][j - 1] + 1
i_num = distance[i % 2][j - 1] + 1 i_num = distance[cur_row_idx][j - 1] + 1
d_num = distance[(i - 1) % 2][j] + 1 d_num = distance[prev_row_idx][j] + 1
distance[i % 2][j] = min(s_num, i_num, d_num) distance[cur_row_idx][j] = min(s_num, i_num, d_num)
return distance[m % 2][n] return distance[m % 2][n]

@ -11,16 +11,54 @@ import error_rate
class TestParse(unittest.TestCase): class TestParse(unittest.TestCase):
def test_wer_1(self): def test_wer_1(self):
ref = 'i UM the PHONE IS i LEFT THE portable PHONE UPSTAIRS last night' ref = 'i UM the PHONE IS i LEFT THE portable PHONE UPSTAIRS last night'
hyp = 'i GOT IT TO the FULLEST i LOVE TO portable FROM OF STORES last night' hyp = 'i GOT IT TO the FULLEST i LOVE TO portable FROM OF STORES last '\
'night'
word_error_rate = error_rate.wer(ref, hyp) word_error_rate = error_rate.wer(ref, hyp)
self.assertTrue(abs(word_error_rate - 0.769230769231) < 1e-6) self.assertTrue(abs(word_error_rate - 0.769230769231) < 1e-6)
def test_wer_2(self): def test_wer_2(self):
ref = 'as any in england i would say said gamewell proudly that is '\
'in his day'
hyp = 'as any in england i would say said came well proudly that is '\
'in his day'
word_error_rate = error_rate.wer(ref, hyp)
self.assertTrue(abs(word_error_rate - 0.1333333) < 1e-6)
def test_wer_3(self):
ref = 'the lieutenant governor lilburn w boggs afterward governor '\
'was a pronounced mormon hater and throughout the period of '\
'the troubles he manifested sympathy with the persecutors'
hyp = 'the lieutenant governor little bit how bags afterward '\
'governor was a pronounced warman hater and throughout the '\
'period of th troubles he manifests sympathy with the '\
'persecutors'
word_error_rate = error_rate.wer(ref, hyp)
self.assertTrue(abs(word_error_rate - 0.2692307692) < 1e-6)
def test_wer_4(self):
ref = 'the wood flamed up splendidly under the large brewing copper '\
'and it sighed so deeply'
hyp = 'the wood flame do splendidly under the large brewing copper '\
'and its side so deeply'
word_error_rate = error_rate.wer(ref, hyp)
self.assertTrue(abs(word_error_rate - 0.2666666667) < 1e-6)
def test_wer_5(self):
ref = 'all the morning they trudged up the mountain path and at noon '\
'unc and ojo sat on a fallen tree trunk and ate the last of '\
'the bread which the old munchkin had placed in his pocket'
hyp = 'all the morning they trudged up the mountain path and at noon '\
'unc in ojo sat on a fallen tree trunk and ate the last of '\
'the bread which the old munchkin had placed in his pocket'
word_error_rate = error_rate.wer(ref, hyp)
self.assertTrue(abs(word_error_rate - 0.027027027) < 1e-6)
def test_wer_6(self):
ref = 'i UM the PHONE IS i LEFT THE portable PHONE UPSTAIRS last night' ref = 'i UM the PHONE IS i LEFT THE portable PHONE UPSTAIRS last night'
word_error_rate = error_rate.wer(ref, ref) word_error_rate = error_rate.wer(ref, ref)
self.assertEqual(word_error_rate, 0.0) self.assertEqual(word_error_rate, 0.0)
def test_wer_3(self): def test_wer_7(self):
ref = ' ' ref = ' '
hyp = 'Hypothesis sentence' hyp = 'Hypothesis sentence'
with self.assertRaises(ValueError): with self.assertRaises(ValueError):
@ -39,28 +77,34 @@ class TestParse(unittest.TestCase):
self.assertTrue(abs(char_error_rate - 0.125) < 1e-6) self.assertTrue(abs(char_error_rate - 0.125) < 1e-6)
def test_cer_3(self): def test_cer_3(self):
ref = 'were wolf'
hyp = 'were wolf'
char_error_rate = error_rate.cer(ref, hyp)
self.assertTrue(abs(char_error_rate - 0.0) < 1e-6)
def test_cer_4(self):
ref = 'werewolf' ref = 'werewolf'
char_error_rate = error_rate.cer(ref, ref) char_error_rate = error_rate.cer(ref, ref)
self.assertEqual(char_error_rate, 0.0) self.assertEqual(char_error_rate, 0.0)
def test_cer_4(self): def test_cer_5(self):
ref = u'我是中国人' ref = u'我是中国人'
hyp = u'我是 美洲人' hyp = u'我是 美洲人'
char_error_rate = error_rate.cer(ref, hyp) char_error_rate = error_rate.cer(ref, hyp)
self.assertTrue(abs(char_error_rate - 0.6) < 1e-6) self.assertTrue(abs(char_error_rate - 0.6) < 1e-6)
def test_cer_5(self): def test_cer_6(self):
ref = u'我 是 中 国 人' ref = u'我 是 中 国 人'
hyp = u'我 是 美 洲 人' hyp = u'我 是 美 洲 人'
char_error_rate = error_rate.cer(ref, hyp, remove_space=True) char_error_rate = error_rate.cer(ref, hyp, remove_space=True)
self.assertTrue(abs(char_error_rate - 0.4) < 1e-6) self.assertTrue(abs(char_error_rate - 0.4) < 1e-6)
def test_cer_6(self): def test_cer_7(self):
ref = u'我是中国人' ref = u'我是中国人'
char_error_rate = error_rate.cer(ref, ref) char_error_rate = error_rate.cer(ref, ref)
self.assertFalse(char_error_rate, 0.0) self.assertFalse(char_error_rate, 0.0)
def test_cer_7(self): def test_cer_8(self):
ref = '' ref = ''
hyp = 'Hypothesis' hyp = 'Hypothesis'
with self.assertRaises(ValueError): with self.assertRaises(ValueError):

Loading…
Cancel
Save