





from typing import List

import jiwer
import jiwer.transforms as tr
from packaging import version

import datasets
from datasets.config import PY_VERSION


if PY_VERSION < version.parse("""3.8"""):
    import importlib_metadata
else:
    import importlib.metadata as importlib_metadata


_UpperCAmelCase				:       str	   =				""""""


if version.parse(importlib_metadata.version("""jiwer""")) < version.parse("""2.3.0"""):

    class    lowerCAmelCase							(					tr.AbstractTransform			):
     def __init__(      self  :      Tuple			,     UpperCAmelCase  :      str = " "	)			->	Tuple:
         lowerCamelCase__    :      Dict					 =		sentence_delimiter
     def      A_	(      self  :      Dict			,     UpperCAmelCase  :      str	)			->	Any:
         return list(UpperCAmelCase	)







     def      A_	(      self  :      Union[str, Any]			,     UpperCAmelCase  :      List[str]	)			->	Tuple:
         lowerCamelCase__    :      Tuple					 =		[]
         for sent_idx, sentence in enumerate(UpperCAmelCase	):
             chars.extend(self.process_string(UpperCAmelCase	)	)
             if self.sentence_delimiter is not None and self.sentence_delimiter != "" and sent_idx < len(UpperCAmelCase	) - 1:
                 chars.append(self.sentence_delimiter	)
         return chars


    _UpperCAmelCase				:       str	   =				tr.Compose(
        [tr.RemoveMultipleSpaces(), tr.Strip(), SentencesToListOfCharacters(SENTENCE_DELIMITER)]
    )
else:
    _UpperCAmelCase				:       Optional[Any]	   =				tr.Compose(
        [
            tr.RemoveMultipleSpaces(),
            tr.Strip(),
            tr.ReduceToSingleSentence(SENTENCE_DELIMITER),
            tr.ReduceToListOfListOfChars(),
        ]
    )


_UpperCAmelCase				:       str	   =				"""\
@inproceedings{inproceedings,
    author = {Morris, Andrew and Maier, Viktoria and Green, Phil},
    year = {2004},
    month = {01},
    pages = {},
    title = {From WER and RIL to MER and WIL: improved evaluation measures for connected speech recognition.}
}
"""

_UpperCAmelCase				:       List[Any]	   =				"""\
Character error rate (CER) is a common metric of the performance of an automatic speech recognition system.

CER is similar to Word Error Rate (WER), but operates on character instead of word. Please refer to docs of WER for further information.

Character error rate can be computed as:

CER = (S + D + I) / N = (S + D + I) / (S + D + C)

where

S is the number of substitutions,
D is the number of deletions,
I is the number of insertions,
C is the number of correct characters,
N is the number of characters in the reference (N=S+D+C).

CER's output is not always a number between 0 and 1, in particular when there is a high number of insertions. This value is often associated to the percentage of characters that were incorrectly predicted. The lower the value, the better the
performance of the ASR system with a CER of 0 being a perfect score.
"""

_UpperCAmelCase				:       str	   =				"""
Computes CER score of transcribed segments against references.
Args:
    references: list of references for each speech input.
    predictions: list of transcribtions to score.
    concatenate_texts: Whether or not to concatenate sentences before evaluation, set to True for more accurate result.
Returns:
    (float): the character error rate

Examples:

    >>> predictions = [\"this is the prediction\", \"there is an other sample\"]
    >>> references = [\"this is the reference\", \"there is another one\"]
    >>> cer = datasets.load_metric(\"cer\")
    >>> cer_score = cer.compute(predictions=predictions, references=references)
    >>> print(cer_score)
    0.34146341463414637
"""

@datasets.utils.file_utils.add_start_docstrings(_DESCRIPTION,  _KWARGS_DESCRIPTION			)
class    lowerCAmelCase							(					datasets.Metric			):
 def      A_	(      self  :      int	)			->	Tuple:
     return datasets.MetricInfo(
         description=_DESCRIPTION			,     citation=_CITATION			,     inputs_description=_KWARGS_DESCRIPTION			,     features=datasets.Features(
             {
                 'predictions': datasets.Value('string'			,     id='sequence'	),
                 'references': datasets.Value('string'			,     id='sequence'	),
             }	)			,     codebase_urls=['https://github.com/jitsi/jiwer/']			,     reference_urls=[
             'https://en.wikipedia.org/wiki/Word_error_rate',
             'https://sites.google.com/site/textdigitisation/qualitymeasures/computingerrorrates',
         ]			,     )







 def      A_	(      self  :      Tuple			,     UpperCAmelCase  :      Optional[Any]			,     UpperCAmelCase  :      Union[str, Any]			,     UpperCAmelCase  :      int=False	)			->	Any:
     if concatenate_texts:
         return jiwer.compute_measures(
             UpperCAmelCase			,     UpperCAmelCase			,     truth_transform=UpperCAmelCase			,     hypothesis_transform=UpperCAmelCase			,     )["wer"]

     lowerCamelCase__    :      List[str]					 =		0
     lowerCamelCase__    :      List[Any]					 =		0
     for prediction, reference in zip(UpperCAmelCase			,     UpperCAmelCase	):
         lowerCamelCase__    :      Optional[int]					 =		jiwer.compute_measures(
             UpperCAmelCase			,     UpperCAmelCase			,     truth_transform=UpperCAmelCase			,     hypothesis_transform=UpperCAmelCase			,     )
         incorrect += measures["substitutions"] + measures["deletions"] + measures["insertions"]
         total += measures["substitutions"] + measures["deletions"] + measures["hits"]

     return incorrect / total













import os
import unittest

from transformers import BatchEncoding
from transformers.models.bert.tokenization_bert import (
    BasicTokenizer,
    WordpieceTokenizer,
    _is_control,
    _is_punctuation,
    _is_whitespace,
)
from transformers.models.prophetnet.tokenization_prophetnet import VOCAB_FILES_NAMES, ProphetNetTokenizer
from transformers.testing_utils import require_torch, slow

from ...test_tokenization_common import TokenizerTesterMixin






class 		lowercase_					(	lowercase ,  unittest.TestCase   ):






      '''simple docstring'''




      __snake_case       =  ProphetNetTokenizer
      __snake_case       =  False







      def       __lowerCAmelCase					(      self      :						Optional[int]  )    ->Optional[Any]:




       """simple docstring"""


       super().setUp()

       a		  =      [
           '''[UNK]''',
           '''[CLS]''',
           '''[SEP]''',
           '''[PAD]''',
           '''[MASK]''',
           '''want''',
           '''##want''',
           '''##ed''',
           '''wa''',
           '''un''',
           '''runn''',
           '''##ing''',
           ''',''',
           '''low''',
           '''lowest''',
       ]
       a		  =      os.path.join(self.tmpdirname ,					VOCAB_FILES_NAMES['''vocab_file''']  )
       with open(self.vocab_file ,					'''w''' ,					encoding='''utf-8'''  ) as vocab_writer:
        vocab_writer.write(''''''.join([x + '''\n''' for x in vocab_tokens]  )  )







      def       __lowerCAmelCase					(      self      :						List[str] ,					__UpperCAmelCase      :						str  )    ->Dict:




       """simple docstring"""


       a		  =      '''UNwant\u00E9d,running'''
       a		  =      '''unwanted, running'''
       return input_text, output_text







      def       __lowerCAmelCase					(      self      :						Optional[int]  )    ->Optional[Any]:




       """simple docstring"""


       a		  =      self.tokenizer_class(self.vocab_file  )

       a		  =      tokenizer.tokenize('''UNwant\u00E9d,running'''  )
       self.assertListEqual(__UpperCAmelCase ,					['''un''', '''##want''', '''##ed''', ''',''', '''runn''', '''##ing''']  )
       self.assertListEqual(tokenizer.convert_tokens_to_ids(__UpperCAmelCase  ) ,					[9, 6, 7, 12, 10, 11]  )







      def       __lowerCAmelCase					(      self      :						int  )    ->Any:




       """simple docstring"""


       a		  =      BasicTokenizer()

       self.assertListEqual(tokenizer.tokenize('''ah\u535A\u63A8zz'''  ) ,					['''ah''', '''\u535A''', '''\u63A8''', '''zz''']  )







      def       __lowerCAmelCase					(      self      :						Any  )    ->int:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHeLLo!how  \n Are yoU?  '''  ) ,					['''hello''', '''!''', '''how''', '''are''', '''you''', '''?''']  )
       self.assertListEqual(tokenizer.tokenize('''H\u00E9llo'''  ) ,					['''hello''']  )







      def       __lowerCAmelCase					(      self      :						Union[str, Any]  )    ->Optional[int]:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase ,					strip_accents=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHäLLo!how  \n Are yoU?  '''  ) ,					['''hällo''', '''!''', '''how''', '''are''', '''you''', '''?''']  )
       self.assertListEqual(tokenizer.tokenize('''H\u00E9llo'''  ) ,					['''h\u00E9llo''']  )







      def       __lowerCAmelCase					(      self      :						Dict  )    ->str:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase ,					strip_accents=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHäLLo!how  \n Are yoU?  '''  ) ,					['''hallo''', '''!''', '''how''', '''are''', '''you''', '''?''']  )
       self.assertListEqual(tokenizer.tokenize('''H\u00E9llo'''  ) ,					['''hello''']  )







      def       __lowerCAmelCase					(      self      :						Any  )    ->Dict:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHäLLo!how  \n Are yoU?  '''  ) ,					['''hallo''', '''!''', '''how''', '''are''', '''you''', '''?''']  )
       self.assertListEqual(tokenizer.tokenize('''H\u00E9llo'''  ) ,					['''hello''']  )







      def       __lowerCAmelCase					(      self      :						Tuple  )    ->Optional[Any]:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHeLLo!how  \n Are yoU?  '''  ) ,					['''HeLLo''', '''!''', '''how''', '''Are''', '''yoU''', '''?''']  )







      def       __lowerCAmelCase					(      self      :						Tuple  )    ->Tuple:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase ,					strip_accents=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHäLLo!how  \n Are yoU?  '''  ) ,					['''HäLLo''', '''!''', '''how''', '''Are''', '''yoU''', '''?''']  )







      def       __lowerCAmelCase					(      self      :						int  )    ->Optional[int]:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase ,					strip_accents=__UpperCAmelCase  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHäLLo!how  \n Are yoU?  '''  ) ,					['''HaLLo''', '''!''', '''how''', '''Are''', '''yoU''', '''?''']  )







      def       __lowerCAmelCase					(      self      :						Any  )    ->int:




       """simple docstring"""


       a		  =      BasicTokenizer(do_lower_case=__UpperCAmelCase ,					never_split=['''[UNK]''']  )

       self.assertListEqual(
           tokenizer.tokenize(''' \tHeLLo!how  \n Are yoU? [UNK]'''  ) ,					['''HeLLo''', '''!''', '''how''', '''Are''', '''yoU''', '''?''', '''[UNK]''']  )







      def       __lowerCAmelCase					(      self      :						Union[str, Any]  )    ->int:




       """simple docstring"""


       a		  =      ['''[UNK]''', '''[CLS]''', '''[SEP]''', '''want''', '''##want''', '''##ed''', '''wa''', '''un''', '''runn''', '''##ing''']

       a		  =      {}
       for i, token in enumerate(__UpperCAmelCase  ):
        a		  =      i
       a		  =      WordpieceTokenizer(vocab=__UpperCAmelCase ,					unk_token='''[UNK]'''  )

       self.assertListEqual(tokenizer.tokenize(''''''  ) ,					[]  )

       self.assertListEqual(tokenizer.tokenize('''unwanted running'''  ) ,					['''un''', '''##want''', '''##ed''', '''runn''', '''##ing''']  )

       self.assertListEqual(tokenizer.tokenize('''unwantedX running'''  ) ,					['''[UNK]''', '''runn''', '''##ing''']  )







      @require_torch
      def       __lowerCAmelCase					(      self      :						int  )    ->int:




       """simple docstring"""


       a		  =      self.tokenizer_class.from_pretrained('''microsoft/prophetnet-large-uncased'''  )

       a		  =      ['''A long paragraph for summarization.''', '''Another paragraph for summarization.''']
       a		  =      [1_037, 2_146, 20_423, 2_005, 7_680, 7_849, 3_989, 1_012, 102]
       a		  =      tokenizer(__UpperCAmelCase ,					padding=__UpperCAmelCase ,					return_tensors='''pt'''  )
       self.assertIsInstance(__UpperCAmelCase ,					__UpperCAmelCase  )
       a		  =      list(batch.input_ids.numpy()[0]  )
       self.assertListEqual(__UpperCAmelCase ,					__UpperCAmelCase  )

       self.assertEqual((2, 9) ,					batch.input_ids.shape  )
       self.assertEqual((2, 9) ,					batch.attention_mask.shape  )







      def       __lowerCAmelCase					(      self      :						Optional[Any]  )    ->List[str]:




       """simple docstring"""


       self.assertTrue(_is_whitespace(''' '''  )  )
       self.assertTrue(_is_whitespace('''\t'''  )  )
       self.assertTrue(_is_whitespace('''\r'''  )  )
       self.assertTrue(_is_whitespace('''\n'''  )  )
       self.assertTrue(_is_whitespace('''\u00A0'''  )  )

       self.assertFalse(_is_whitespace('''A'''  )  )
       self.assertFalse(_is_whitespace('''-'''  )  )







      def       __lowerCAmelCase					(      self      :						Any  )    ->List[str]:




       """simple docstring"""


       self.assertTrue(_is_control('''\u0005'''  )  )

       self.assertFalse(_is_control('''A'''  )  )
       self.assertFalse(_is_control(''' '''  )  )
       self.assertFalse(_is_control('''\t'''  )  )
       self.assertFalse(_is_control('''\r'''  )  )







      def       __lowerCAmelCase					(      self      :						List[Any]  )    ->List[str]:




       """simple docstring"""


       self.assertTrue(_is_punctuation('''-'''  )  )
       self.assertTrue(_is_punctuation('''$'''  )  )
       self.assertTrue(_is_punctuation('''`'''  )  )
       self.assertTrue(_is_punctuation('''.'''  )  )

       self.assertFalse(_is_punctuation('''A'''  )  )
       self.assertFalse(_is_punctuation(''' '''  )  )







      @slow
      def       __lowerCAmelCase					(      self      :						List[str]  )    ->List[str]:




       """simple docstring"""


       a		  =      self.tokenizer_class.from_pretrained('''microsoft/prophetnet-large-uncased'''  )

       a		  =      tokenizer.encode('''sequence builders''' ,					add_special_tokens=__UpperCAmelCase  )
       a		  =      tokenizer.encode('''multi-sequence build''' ,					add_special_tokens=__UpperCAmelCase  )

       a		  =      tokenizer.build_inputs_with_special_tokens(__UpperCAmelCase  )
       a		  =      tokenizer.build_inputs_with_special_tokens(__UpperCAmelCase ,					__UpperCAmelCase  )

       assert encoded_sentence == text + [102]
       assert encoded_pair == text + [102] + text_a + [102]


