from jiwer import compute_measures

import datasets


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

UpperCamelCase__											=					'\\nWord error rate (WER) is a common metric of the performance of an automatic speech recognition system.\n\nThe general difficulty of measuring performance lies in the fact that the recognized word sequence can have a different length from the reference word sequence (supposedly the correct one). The WER is derived from the Levenshtein distance, working at the word level instead of the phoneme level. The WER is a valuable tool for comparing different systems as well as for evaluating improvements within one system. This kind of measurement, however, provides no details on the nature of translation errors and further work is therefore required to identify the main source(s) of error and to focus any research effort.\n\nThis problem is solved by first aligning the recognized word sequence with the reference (spoken) word sequence using dynamic string alignment. Examination of this issue is seen through a theory called the power law that states the correlation between perplexity and word error rate.\n\nWord error rate can then be computed as:\n\nWER = (S + D + I) / N = (S + D + I) / (S + D + C)\n\nwhere\n\nS is the number of substitutions,\nD is the number of deletions,\nI is the number of insertions,\nC is the number of correct words,\nN is the number of words in the reference (N=S+D+C).\n\nThis value indicates the average number of errors per reference word. The lower the value, the better the\nperformance of the ASR system with a WER of 0 being a perfect score.\n'

UpperCamelCase__											=					'\nCompute WER score of transcribed segments against references.\n\nArgs:\n    references: List of references for each speech input.\n    predictions: List of transcriptions to score.\n    concatenate_texts (bool, default=False): Whether to concatenate all input texts or compute WER iteratively.\n\nReturns:\n    (float): the word error rate\n\nExamples:\n\n    >>> predictions = [\"this is the prediction\", \"there is an other sample\"]\n    >>> references = [\"this is the reference\", \"there is another one\"]\n    >>> wer = datasets.load_metric(\"wer\")\n    >>> wer_score = wer.compute(predictions=predictions, references=references)\n    >>> print(wer_score)\n    0.5\n'





@datasets.utils.file_utils.add_start_docstrings(_DESCRIPTION		,				_KWARGS_DESCRIPTION     )
class      A							(				datasets.Metric     ):


   def 			lowercase_      (self     :						Union[str, Any]		)						->				Optional[Any]:
         """simple docstring"""



         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",
             ]       ,  )





   def 			lowercase_      (self     :						Optional[int]       ,  __UpperCAmelCase     :						Any=None       ,  __UpperCAmelCase     :						int=None       ,  __UpperCAmelCase     :						Union[str, Any]=False		)						->				List[Any]:
         """simple docstring"""



         if concatenate_texts:
               return compute_measures(_UpperCAmelCase       ,  _UpperCAmelCase		)["wer"]
         else:
               UpperCAmelCase__								=  0
               UpperCAmelCase__								=  0
               for prediction, reference in zip(_UpperCAmelCase       ,  _UpperCAmelCase		):
                     UpperCAmelCase__								=  compute_measures(_UpperCAmelCase       ,  _UpperCAmelCase		)
                     incorrect += measures["substitutions"] + measures["deletions"] + measures["insertions"]
                     total += measures["substitutions"] + measures["deletions"] + measures["hits"]
               return incorrect / total




"""simple docstring"""






from __future__ import annotations

import unittest

from transformers import AutoTokenizer, MBartConfig, is_tf_available
from transformers.testing_utils import require_sentencepiece, require_tf, require_tokenizers, slow
from transformers.utils import cached_property

from ...test_configuration_common import ConfigTester
from ...test_modeling_tf_common import TFModelTesterMixin, ids_tensor
from ...test_pipeline_mixin import PipelineTesterMixin


if is_tf_available():
       import tensorflow as tf

       from transformers import TFAutoModelForSeqaSeqLM, TFMBartForConditionalGeneration, TFMBartModel


@require_tf
class     UpperCAmelCase						:



    """simple docstring"""

    _UpperCAmelCase	:Union[str, Any]						    = MBartConfig
    _UpperCAmelCase	:str						    = {}
    _UpperCAmelCase	:Union[str, Any]						    = "gelu"






    def __init__(   self    ,			_UpperCAmelCase    ,			_UpperCAmelCase=13    ,			_UpperCAmelCase=7    ,			_UpperCAmelCase=True    ,			_UpperCAmelCase=False    ,			_UpperCAmelCase=99    ,			_UpperCAmelCase=32    ,			_UpperCAmelCase=2    ,			_UpperCAmelCase=4    ,			_UpperCAmelCase=37    ,			_UpperCAmelCase=0.1    ,			_UpperCAmelCase=0.1    ,			_UpperCAmelCase=20    ,			_UpperCAmelCase=2    ,			_UpperCAmelCase=1    ,			_UpperCAmelCase=0    ,			):
       lowercase__:   List[str]					=      parent
       lowercase__:   List[Any]					=      batch_size
       lowercase__:   List[Any]					=      seq_length
       lowercase__:   str					=      is_training
       lowercase__:   List[str]					=      use_labels
       lowercase__:   Optional[int]					=      vocab_size
       lowercase__:   int					=      hidden_size
       lowercase__:   Optional[int]					=      num_hidden_layers
       lowercase__:   int					=      num_attention_heads
       lowercase__:   Tuple					=      intermediate_size
       lowercase__:   Optional[Any]					=      hidden_dropout_prob
       lowercase__:   Optional[int]					=      attention_probs_dropout_prob
       lowercase__:   str					=      max_position_embeddings
       lowercase__:   Union[str, Any]					=      eos_token_id
       lowercase__:   int					=      pad_token_id
       lowercase__:   List[str]					=      bos_token_id






    def _snake_case			(   self							):
       lowercase__:   int					=      ids_tensor([self.batch_size, self.seq_length - 1]    ,			self.vocab_size							)
       lowercase__:   str					=      tf.expand_dims(tf.constant([self.eos_token_id] * self.batch_size							)    ,			1							)
       lowercase__:   List[Any]					=      tf.concat([input_ids, eos_tensor]    ,			axis=1							)

       lowercase__:   List[Any]					=      ids_tensor([self.batch_size, self.seq_length]    ,			self.vocab_size							)

       lowercase__:   Optional[Any]					=      self.config_cls(
           vocab_size=self.vocab_size    ,			d_model=self.hidden_size    ,			encoder_layers=self.num_hidden_layers    ,			decoder_layers=self.num_hidden_layers    ,			encoder_attention_heads=self.num_attention_heads    ,			decoder_attention_heads=self.num_attention_heads    ,			encoder_ffn_dim=self.intermediate_size    ,			decoder_ffn_dim=self.intermediate_size    ,			dropout=self.hidden_dropout_prob    ,			attention_dropout=self.attention_probs_dropout_prob    ,			max_position_embeddings=self.max_position_embeddings    ,			eos_token_ids=[2]    ,			bos_token_id=self.bos_token_id    ,			pad_token_id=self.pad_token_id    ,			decoder_start_token_id=self.pad_token_id    ,			**self.config_updates    ,			)
       lowercase__:   Optional[int]					=      prepare_mbart_inputs_dict(_UpperCAmelCase    ,			_UpperCAmelCase    ,			_UpperCAmelCase							)
       return config, inputs_dict






    def _snake_case			(   self    ,			_UpperCAmelCase    ,			_UpperCAmelCase							):
       lowercase__:   List[str]					=      TFMBartModel(config=_UpperCAmelCase							).get_decoder()
       lowercase__:   Tuple					=      inputs_dict['''input_ids''']

       lowercase__:   Optional[Any]					=      input_ids[:1, :]
       lowercase__:   Optional[int]					=      inputs_dict['''attention_mask'''][:1, :]
       lowercase__:   List[str]					=      inputs_dict['''head_mask''']
       lowercase__:   Optional[int]					=      1

       # first forward pass
       lowercase__:   List[Any]					=      model(_UpperCAmelCase    ,			attention_mask=_UpperCAmelCase    ,			head_mask=_UpperCAmelCase    ,			use_cache=_UpperCAmelCase							)

       lowercase__, lowercase__:   Any					=      outputs.to_tuple()
       lowercase__:   List[str]					=      past_key_values[1]



def SCREAMING_SNAKE_CASE__			(   __UpperCAmelCase       ,    __UpperCAmelCase       ,    __UpperCAmelCase       ,    __UpperCAmelCase=None       ,    __UpperCAmelCase=None       ,    __UpperCAmelCase=None       ,    __UpperCAmelCase=None       ,    __UpperCAmelCase=None       ,    )  ->  int:
   if attention_mask is None:
      lowercase__:   Union[str, Any]					=      tf.cast(tf.math.not_equal(__UpperCAmelCase       ,    config.pad_token_id )       ,    tf.inta )
   if decoder_attention_mask is None:
      lowercase__:   List[str]					=      tf.concat(
          [
              tf.ones(decoder_input_ids[:, :1].shape       ,    dtype=tf.inta ),
              tf.cast(tf.math.not_equal(decoder_input_ids[:, 1:]       ,    config.pad_token_id )       ,    tf.inta ),
          ]       ,    axis=-1       ,    )
   if head_mask is None:
      lowercase__:   str					=      tf.ones((config.encoder_layers, config.encoder_attention_heads) )
   if decoder_head_mask is None:
      lowercase__:   List[str]					=      tf.ones((config.decoder_layers, config.decoder_attention_heads) )
   if cross_attn_head_mask is None:
      lowercase__:   Union[str, Any]					=      tf.ones((config.decoder_layers, config.decoder_attention_heads) )
   return {
       "input_ids": input_ids,
       "decoder_input_ids": decoder_input_ids,
       "attention_mask": attention_mask,
       "decoder_attention_mask": decoder_attention_mask,
       "head_mask": head_mask,
       "decoder_head_mask": decoder_head_mask,
       "cross_attn_head_mask": cross_attn_head_mask,
   }


@require_tf
class     UpperCAmelCase						(_UpperCAmelCase    ,_UpperCAmelCase    ,unittest.TestCase  ):



    """simple docstring"""

    _UpperCAmelCase	:Dict						    = (TFMBartForConditionalGeneration, TFMBartModel) if is_tf_available() else ()
    _UpperCAmelCase	:List[Any]						    = (TFMBartForConditionalGeneration,) if is_tf_available() else ()
    _UpperCAmelCase	:List[str]						    = (
        {
            "conversational": TFMBartForConditionalGeneration,
            "feature-extraction": TFMBartModel,
            "summarization": TFMBartForConditionalGeneration,
            "text2text-generation": TFMBartForConditionalGeneration,
            "translation": TFMBartForConditionalGeneration,
        }
        if is_tf_available()
        else {}
    )
    _UpperCAmelCase	:str						    = True
    _UpperCAmelCase	:List[Any]						    = False
    _UpperCAmelCase	:str						    = False






    def _snake_case			(   self    ,			_UpperCAmelCase    ,			_UpperCAmelCase    ,			_UpperCAmelCase    ,			_UpperCAmelCase    ,			_UpperCAmelCase							):
       if pipeline_test_casse_name != "FeatureExtractionPipelineTests":
          # Exception encountered when calling layer '...'
          return True

       return False






    def _snake_case			(   self							):
       lowercase__:   Tuple					=      TFMBartModelTester(self							)
       lowercase__:   Optional[Any]					=      ConfigTester(self    ,			config_class=_UpperCAmelCase							)






    def _snake_case			(   self							):
       self.config_tester.run_common_tests()






    def _snake_case			(   self							):
       lowercase__:   List[str]					=      self.model_tester.prepare_config_and_inputs_for_common()
       self.model_tester.check_decoder_model_past_large_inputs(*_UpperCAmelCase							)



@require_sentencepiece
@require_tokenizers
@require_tf
class     UpperCAmelCase						(unittest.TestCase  ):



    """simple docstring"""

    _UpperCAmelCase	:Optional[int]						    = [
        " UN Chief Says There Is No Military Solution in Syria",
    ]
    _UpperCAmelCase	:Any						    = [
        "Şeful ONU declară că nu există o soluţie militară în Siria",
    ]
    _UpperCAmelCase	:Tuple						    = "facebook/mbart-large-en-ro"






    @cached_property
    def _snake_case			(   self							):
       return AutoTokenizer.from_pretrained(self.model_name							)






    @cached_property
    def _snake_case			(   self							):
       lowercase__:   Optional[int]					=      TFAutoModelForSeqaSeqLM.from_pretrained(self.model_name							)
       return model






    def _snake_case			(   self    ,			**_UpperCAmelCase							):
       lowercase__:   List[Any]					=      self.translate_src_text(**_UpperCAmelCase							)
       self.assertListEqual(self.expected_text    ,			_UpperCAmelCase							)






    def _snake_case			(   self    ,			**_UpperCAmelCase							):
       lowercase__:   str					=      self.tokenizer(self.src_text    ,			**_UpperCAmelCase    ,			return_tensors='''tf'''							)
       lowercase__:   Optional[int]					=      self.model.generate(
           model_inputs.input_ids    ,			attention_mask=model_inputs.attention_mask    ,			num_beams=2							)
       lowercase__:   Tuple					=      self.tokenizer.batch_decode(_UpperCAmelCase    ,			skip_special_tokens=_UpperCAmelCase							)
       return generated_words






    @slow
    def _snake_case			(   self							):
       self._assert_generated_batch_equal_expected()
