'''simple docstring'''







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_      	=	''''''


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




		class _SCREAMING_SNAKE_CASE(							tr.AbstractTransform					):




								def __init__(    self :       int							,							UpperCamelCase_ :       str = " "      )     ->				int:
															SCREAMING_SNAKE_CASE__     :List[Any]						    = sentence_delimiter




								def      __lowerCamelCase       (    self :       List[str]							,							UpperCamelCase_ :       str      )     ->				Optional[Any]:
															return list(UpperCamelCase_      )




								def      __lowerCamelCase       (    self :       int							,							UpperCamelCase_ :       List[str]      )     ->				Dict:
															SCREAMING_SNAKE_CASE__     :Any						    = []
															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_      	=	tr.Compose(
		    [tr.RemoveMultipleSpaces(), tr.Strip(), SentencesToListOfCharacters(SENTENCE_DELIMITER)]
		)
else:
		UpperCamelCase_      	=	tr.Compose(
		    [
		        tr.RemoveMultipleSpaces(),
		        tr.Strip(),
		        tr.ReduceToSingleSentence(SENTENCE_DELIMITER),
		        tr.ReduceToListOfListOfChars(),
		    ]
		)


UpperCamelCase_      	=	'''\
@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_      	=	'''\
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_      	=	'''
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 _SCREAMING_SNAKE_CASE(							datasets.Metric					):




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

													SCREAMING_SNAKE_CASE__     :Optional[int]						    = 0
													SCREAMING_SNAKE_CASE__     :Optional[Any]						    = 0
													for prediction, reference in zip(UpperCamelCase_							,							UpperCamelCase_      ):
																				SCREAMING_SNAKE_CASE__     :Dict						    = 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







'''simple docstring'''







import absl  # noqa: F401 # Here to have a nice missing dependency error message early on
import nltk  # noqa: F401 # Here to have a nice missing dependency error message early on
import numpy  # noqa: F401 # Here to have a nice missing dependency error message early on
import six  # noqa: F401 # Here to have a nice missing dependency error message early on
from rouge_score import rouge_scorer, scoring

import datasets


UpperCamelCase_      	=	'''\
@inproceedings{lin-2004-rouge,
    title = "{ROUGE}: A Package for Automatic Evaluation of Summaries",
    author = "Lin, Chin-Yew",
    booktitle = "Text Summarization Branches Out",
    month = jul,
    year = "2004",
    address = "Barcelona, Spain",
    publisher = "Association for Computational Linguistics",
    url = "https://www.aclweb.org/anthology/W04-1013",
    pages = "74--81",
}
'''

UpperCamelCase_      	=	'''\
ROUGE, or Recall-Oriented Understudy for Gisting Evaluation, is a set of metrics and a software package used for
evaluating automatic summarization and machine translation software in natural language processing.
The metrics compare an automatically produced summary or translation against a reference or a set of references (human-produced) summary or translation.

Note that ROUGE is case insensitive, meaning that upper case letters are treated the same way as lower case letters.

This metrics is a wrapper around Google Research reimplementation of ROUGE:
https://github.com/google-research/google-research/tree/master/rouge
'''

UpperCamelCase_      	=	'''
Calculates average rouge scores for a list of hypotheses and references
Args:
    predictions: list of predictions to score. Each prediction
        should be a string with tokens separated by spaces.
    references: list of reference for each prediction. Each
        reference should be a string with tokens separated by spaces.
    rouge_types: A list of rouge types to calculate.
        Valid names:
        `"rouge{n}"` (e.g. `"rouge1"`, `"rouge2"`) where: {n} is the n-gram based scoring,
        `"rougeL"`: Longest common subsequence based scoring.
        `"rougeLSum"`: rougeLsum splits text using `"\n"`.
        See details in https://github.com/huggingface/datasets/issues/617
    use_stemmer: Bool indicating whether Porter stemmer should be used to strip word suffixes.
    use_aggregator: Return aggregates if this is set to True
Returns:
    rouge1: rouge_1 (precision, recall, f1),
    rouge2: rouge_2 (precision, recall, f1),
    rougeL: rouge_l (precision, recall, f1),
    rougeLsum: rouge_lsum (precision, recall, f1)
Examples:

    >>> rouge = datasets.load_metric(\'rouge\')
    >>> predictions = ["hello there", "general kenobi"]
    >>> references = ["hello there", "general kenobi"]
    >>> results = rouge.compute(predictions=predictions, references=references)
    >>> print(list(results.keys()))
    [\'rouge1\', \'rouge2\', \'rougeL\', \'rougeLsum\']
    >>> print(results["rouge1"])
    AggregateScore(low=Score(precision=1.0, recall=1.0, fmeasure=1.0), mid=Score(precision=1.0, recall=1.0, fmeasure=1.0), high=Score(precision=1.0, recall=1.0, fmeasure=1.0))
    >>> print(results["rouge1"].mid.fmeasure)
    1.0
'''




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




						def      __lowerCamelCase       (    self :       Any      )     ->				Union[str, Any]:
													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/google-research/google-research/tree/master/rouge']							,							reference_urls=[
													        'https://en.wikipedia.org/wiki/ROUGE_(metric)',
													        'https://github.com/google-research/google-research/tree/master/rouge',
													    ]							,							)




						def      __lowerCamelCase       (    self :       Optional[Any]							,							UpperCamelCase_ :       Optional[int]							,							UpperCamelCase_ :       int							,							UpperCamelCase_ :       Tuple=None							,							UpperCamelCase_ :       Tuple=True							,							UpperCamelCase_ :       str=False      )     ->				Optional[Any]:
													if rouge_types is None:
																				SCREAMING_SNAKE_CASE__     :Optional[int]						    = ['rouge1', 'rouge2', 'rougeL', 'rougeLsum']

													SCREAMING_SNAKE_CASE__     :Union[str, Any]						    = rouge_scorer.RougeScorer(rouge_types=UpperCamelCase_							,							use_stemmer=UpperCamelCase_      )
													if use_aggregator:
																				SCREAMING_SNAKE_CASE__     :Tuple						    = scoring.BootstrapAggregator()
													else:
																				SCREAMING_SNAKE_CASE__     :Any						    = []

													for ref, pred in zip(UpperCamelCase_							,							UpperCamelCase_      ):
																				SCREAMING_SNAKE_CASE__     :Tuple						    = scorer.score(UpperCamelCase_							,							UpperCamelCase_      )
																				if use_aggregator:
																											aggregator.add_scores(UpperCamelCase_      )
																				else:
																											scores.append(UpperCamelCase_      )

													if use_aggregator:
																				SCREAMING_SNAKE_CASE__     :Tuple						    = aggregator.aggregate()
													else:
																				SCREAMING_SNAKE_CASE__     :List[str]						    = {}
																				for key in scores[0]:
																											SCREAMING_SNAKE_CASE__     :int						    = [score[key] for score in scores]

													return result






