




from typing import Dict, List

from nltk.translate import gleu_score

import datasets
from datasets import MetricInfo


lowercase_	:				Tuple  				= '\\n@misc{wu2016googles,\n      title={Google\'s Neural Machine Translation System: Bridging the Gap between Human and Machine Translation},\n      author={Yonghui Wu and Mike Schuster and Zhifeng Chen and Quoc V. Le and Mohammad Norouzi and Wolfgang Macherey\n              and Maxim Krikun and Yuan Cao and Qin Gao and Klaus Macherey and Jeff Klingner and Apurva Shah and Melvin\n              Johnson and Xiaobing Liu and Łukasz Kaiser and Stephan Gouws and Yoshikiyo Kato and Taku Kudo and Hideto\n              Kazawa and Keith Stevens and George Kurian and Nishant Patil and Wei Wang and Cliff Young and\n              Jason Smith and Jason Riesa and Alex Rudnick and Oriol Vinyals and Greg Corrado and Macduff Hughes\n              and Jeffrey Dean},\n      year={2016},\n      eprint={1609.08144},\n      archivePrefix={arXiv},\n      primaryClass={cs.CL}\n}\n'

lowercase_	:				List[Any]  				= '\\nThe BLEU score has some undesirable properties when used for single\nsentences, as it was designed to be a corpus measure. We therefore\nuse a slightly different score for our RL experiments which we call\nthe \'GLEU score\'. For the GLEU score, we record all sub-sequences of\n1, 2, 3 or 4 tokens in output and target sequence (n-grams). We then\ncompute a recall, which is the ratio of the number of matching n-grams\nto the number of total n-grams in the target (ground truth) sequence,\nand a precision, which is the ratio of the number of matching n-grams\nto the number of total n-grams in the generated output sequence. Then\nGLEU score is simply the minimum of recall and precision. This GLEU\nscore\'s range is always between 0 (no matches) and 1 (all match) and\nit is symmetrical when switching output and target. According to\nour experiments, GLEU score correlates quite well with the BLEU\nmetric on a corpus level but does not have its drawbacks for our per\nsentence reward objective.\n'

lowercase_	:				Union[str, Any]  				= '\\nComputes corpus-level Google BLEU (GLEU) score of translated segments against one or more references.\nInstead of averaging the sentence level GLEU scores (i.e. macro-average precision), Wu et al. (2016) sum up the matching\ntokens and the max of hypothesis and reference tokens for each sentence, then compute using the aggregate values.\n\nArgs:\n    predictions (list of str): list of translations to score.\n        Each translation should be tokenized into a list of tokens.\n    references (list of list of str): list of lists of references for each translation.\n        Each reference should be tokenized into a list of tokens.\n    min_len (int): The minimum order of n-gram this function should extract. Defaults to 1.\n    max_len (int): The maximum order of n-gram this function should extract. Defaults to 4.\n\nReturns:\n    \'google_bleu\': google_bleu score\n\nExamples:\n    Example 1:\n        >>> hyp1 = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'which\',\n        ...         \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'always\',\n        ...         \'disobeys\', \'the\', \'commands\', \'of\', \'the\', \'cat\']\n        >>> ref1a = [\'It\', \'is\', \'the\', \'guiding\', \'principle\', \'which\',\n        ...          \'guarantees\', \'the\', \'rubber\', \'duck\', \'forces\', \'never\',\n        ...          \'being\', \'under\', \'the\', \'command\', \'of\', \'the\', \'cat\']\n\n        >>> hyp2 = [\'he\', \'read\', \'the\', \'book\', \'because\', \'he\', \'was\',\n        ...         \'interested\', \'in\', \'world\', \'history\']\n        >>> ref2a = [\'he\', \'was\', \'interested\', \'in\', \'world\', \'history\',\n        ...          \'because\', \'he\', \'read\', \'the\', \'book\']\n\n        >>> list_of_references = [[ref1a], [ref2a]]\n        >>> hypotheses = [hyp1, hyp2]\n        >>> google_bleu = datasets.load_metric("google_bleu")\n        >>> results = google_bleu.compute(predictions=hypotheses, references=list_of_references)\n        >>> print(round(results["google_bleu"], 2))\n        0.44\n\n    Example 2:\n        >>> hyp1 = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'which\',\n        ...         \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'always\',\n        ...         \'disobeys\', \'the\', \'commands\', \'of\', \'the\', \'cat\']\n        >>> ref1a = [\'It\', \'is\', \'the\', \'guiding\', \'principle\', \'which\',\n        ...          \'guarantees\', \'the\', \'rubber\', \'duck\', \'forces\', \'never\',\n        ...          \'being\', \'under\', \'the\', \'command\', \'of\', \'the\', \'cat\']\n        >>> ref1b = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'that\',\n        ...          \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'will\', \'never\',\n        ...          \'heed\', \'the\', \'cat\', \'commands\']\n        >>> ref1c = [\'It\', \'is\', \'the\', \'practical\', \'guide\', \'for\', \'the\',\n        ...          \'rubber\', \'duck\', \'army\', \'never\', \'to\', \'heed\', \'the\', \'directions\',\n        ...          \'of\', \'the\', \'cat\']\n\n        >>> hyp2 = [\'he\', \'read\', \'the\', \'book\', \'because\', \'he\', \'was\',\n        ...         \'interested\', \'in\', \'world\', \'history\']\n        >>> ref2a = [\'he\', \'was\', \'interested\', \'in\', \'world\', \'history\',\n        ...          \'because\', \'he\', \'read\', \'the\', \'book\']\n\n        >>> list_of_references = [[ref1a, ref1b, ref1c], [ref2a]]\n        >>> hypotheses = [hyp1, hyp2]\n        >>> google_bleu = datasets.load_metric("google_bleu")\n        >>> results = google_bleu.compute(predictions=hypotheses, references=list_of_references)\n        >>> print(round(results["google_bleu"], 2))\n        0.61\n\n    Example 3:\n        >>> hyp1 = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'which\',\n        ...         \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'always\',\n        ...         \'disobeys\', \'the\', \'commands\', \'of\', \'the\', \'cat\']\n        >>> ref1a = [\'It\', \'is\', \'the\', \'guiding\', \'principle\', \'which\',\n        ...          \'guarantees\', \'the\', \'rubber\', \'duck\', \'forces\', \'never\',\n        ...          \'being\', \'under\', \'the\', \'command\', \'of\', \'the\', \'cat\']\n        >>> ref1b = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'that\',\n        ...          \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'will\', \'never\',\n        ...          \'heed\', \'the\', \'cat\', \'commands\']\n        >>> ref1c = [\'It\', \'is\', \'the\', \'practical\', \'guide\', \'for\', \'the\',\n        ...          \'rubber\', \'duck\', \'army\', \'never\', \'to\', \'heed\', \'the\', \'directions\',\n        ...          \'of\', \'the\', \'cat\']\n\n        >>> hyp2 = [\'he\', \'read\', \'the\', \'book\', \'because\', \'he\', \'was\',\n        ...         \'interested\', \'in\', \'world\', \'history\']\n        >>> ref2a = [\'he\', \'was\', \'interested\', \'in\', \'world\', \'history\',\n        ...          \'because\', \'he\', \'read\', \'the\', \'book\']\n\n        >>> list_of_references = [[ref1a, ref1b, ref1c], [ref2a]]\n        >>> hypotheses = [hyp1, hyp2]\n        >>> google_bleu = datasets.load_metric("google_bleu")\n        >>> results = google_bleu.compute(predictions=hypotheses, references=list_of_references, min_len=2)\n        >>> print(round(results["google_bleu"], 2))\n        0.53\n\n    Example 4:\n        >>> hyp1 = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'which\',\n        ...         \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'always\',\n        ...         \'disobeys\', \'the\', \'commands\', \'of\', \'the\', \'cat\']\n        >>> ref1a = [\'It\', \'is\', \'the\', \'guiding\', \'principle\', \'which\',\n        ...          \'guarantees\', \'the\', \'rubber\', \'duck\', \'forces\', \'never\',\n        ...          \'being\', \'under\', \'the\', \'command\', \'of\', \'the\', \'cat\']\n        >>> ref1b = [\'It\', \'is\', \'a\', \'guide\', \'to\', \'action\', \'that\',\n        ...          \'ensures\', \'that\', \'the\', \'rubber\', \'duck\', \'will\', \'never\',\n        ...          \'heed\', \'the\', \'cat\', \'commands\']\n        >>> ref1c = [\'It\', \'is\', \'the\', \'practical\', \'guide\', \'for\', \'the\',\n        ...          \'rubber\', \'duck\', \'army\', \'never\', \'to\', \'heed\', \'the\', \'directions\',\n        ...          \'of\', \'the\', \'cat\']\n\n        >>> hyp2 = [\'he\', \'read\', \'the\', \'book\', \'because\', \'he\', \'was\',\n        ...         \'interested\', \'in\', \'world\', \'history\']\n        >>> ref2a = [\'he\', \'was\', \'interested\', \'in\', \'world\', \'history\',\n        ...          \'because\', \'he\', \'read\', \'the\', \'book\']\n\n        >>> list_of_references = [[ref1a, ref1b, ref1c], [ref2a]]\n        >>> hypotheses = [hyp1, hyp2]\n        >>> google_bleu = datasets.load_metric("google_bleu")\n        >>> results = google_bleu.compute(predictions=hypotheses,references=list_of_references, min_len=2, max_len=6)\n        >>> print(round(results["google_bleu"], 2))\n        0.4\n'






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







			def UpperCamelCase			(       self    :			List[Any]      ):




									"""simple docstring"""


									return datasets.MetricInfo(
									    description=_DESCRIPTION    ,    citation=_CITATION    ,    inputs_description=_KWARGS_DESCRIPTION    ,    features=datasets.Features(
									        {
									            "predictions": datasets.Sequence(datasets.Value("string"    ,    id="token"      )    ,    id="sequence"      ),
									            "references": datasets.Sequence(
									                datasets.Sequence(datasets.Value("string"    ,    id="token"      )    ,    id="sequence"      )    ,    id="references"      ),
									        }      )    ,    )







			def UpperCamelCase			(       self    :			Tuple    ,    snake_case__    :			Tuple    ,    snake_case__    :			List[Any]    ,    snake_case__    :			Union[str, Any] = 1    ,    snake_case__    :			Dict = 4    ,    ):




									"""simple docstring"""


									return {
									    "google_bleu": gleu_score.corpus_gleu(
									        list_of_references=snake_case__    ,    hypotheses=snake_case__    ,    min_len=snake_case__    ,    max_len=snake_case__      )
									}








import unittest

from transformers import is_torch_available
from transformers.testing_utils import require_torch, slow, torch_device

from ...generation.test_utils import GenerationTesterMixin
from ...test_configuration_common import ConfigTester
from ...test_modeling_common import ModelTesterMixin, ids_tensor
from ...test_pipeline_mixin import PipelineTesterMixin


if is_torch_available():
	import torch

	from transformers import (
	    OPENAI_GPT_PRETRAINED_MODEL_ARCHIVE_LIST,
	    OpenAIGPTConfig,
	    OpenAIGPTDoubleHeadsModel,
	    OpenAIGPTForSequenceClassification,
	    OpenAIGPTLMHeadModel,
	    OpenAIGPTModel,
	)





class       A    :


							def __init__(self      ,				lowerCAmelCase      ,				lowerCAmelCase=1_3      ,				lowerCAmelCase=7      ,				lowerCAmelCase=True      ,				lowerCAmelCase=True      ,				lowerCAmelCase=True      ,				lowerCAmelCase=9_9      ,				lowerCAmelCase=3_2      ,				lowerCAmelCase=5      ,				lowerCAmelCase=4      ,				lowerCAmelCase=3_7      ,				lowerCAmelCase="gelu"      ,				lowerCAmelCase=0.1      ,				lowerCAmelCase=0.1      ,				lowerCAmelCase=5_1_2      ,				lowerCAmelCase=1_6      ,				lowerCAmelCase=2      ,				lowerCAmelCase=0.02      ,				lowerCAmelCase=3      ,				lowerCAmelCase=4      ,				lowerCAmelCase=None      ,				):
									__lowercase=			parent
									__lowercase=			batch_size
									__lowercase=			seq_length
									__lowercase=			is_training
									__lowercase=			use_token_type_ids
									__lowercase=			use_labels
									__lowercase=			vocab_size
									__lowercase=			hidden_size
									__lowercase=			num_hidden_layers
									__lowercase=			num_attention_heads
									__lowercase=			intermediate_size
									__lowercase=			hidden_act
									__lowercase=			hidden_dropout_prob
									__lowercase=			attention_probs_dropout_prob
									__lowercase=			max_position_embeddings
									__lowercase=			type_vocab_size
									__lowercase=			type_sequence_label_size
									__lowercase=			initializer_range
									__lowercase=			num_labels
									__lowercase=			num_choices
									__lowercase=			scope
									__lowercase=			self.vocab_size - 1


							def 			_A       (self					):
									__lowercase=			ids_tensor([self.batch_size, self.seq_length]      ,				self.vocab_size					)

									__lowercase=			None
									if self.use_token_type_ids:
											__lowercase=			ids_tensor([self.batch_size, self.seq_length]      ,				self.type_vocab_size					)

									__lowercase=			None
									__lowercase=			None
									__lowercase=			None
									if self.use_labels:
											__lowercase=			ids_tensor([self.batch_size]      ,				self.type_sequence_label_size					)
											__lowercase=			ids_tensor([self.batch_size, self.seq_length]      ,				self.num_labels					)
											__lowercase=			ids_tensor([self.batch_size]      ,				self.num_choices					)

									__lowercase=			OpenAIGPTConfig(
									    vocab_size=self.vocab_size      ,				n_embd=self.hidden_size      ,				n_layer=self.num_hidden_layers      ,				n_head=self.num_attention_heads      ,				n_positions=self.max_position_embeddings      ,				pad_token_id=self.pad_token_id      ,				)

									__lowercase=			ids_tensor([self.num_hidden_layers, self.num_attention_heads]      ,				2					)

									return (
									    config,
									    input_ids,
									    head_mask,
									    token_type_ids,
									    sequence_labels,
									    token_labels,
									    choice_labels,
									)


							def 			_A       (self      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				*lowerCAmelCase					):
									__lowercase=			OpenAIGPTModel(config=lowerCAmelCase					)
									model.to(lowerCAmelCase					)
									model.eval()

									__lowercase=			model(lowerCAmelCase      ,				token_type_ids=lowerCAmelCase      ,				head_mask=lowerCAmelCase					)
									__lowercase=			model(lowerCAmelCase      ,				token_type_ids=lowerCAmelCase					)
									__lowercase=			model(lowerCAmelCase					)

									self.parent.assertEqual(result.last_hidden_state.shape      ,				(self.batch_size, self.seq_length, self.hidden_size)					)


							def 			_A       (self      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				*lowerCAmelCase					):
									__lowercase=			OpenAIGPTLMHeadModel(lowerCAmelCase					)
									model.to(lowerCAmelCase					)
									model.eval()

									__lowercase=			model(lowerCAmelCase      ,				token_type_ids=lowerCAmelCase      ,				labels=lowerCAmelCase					)
									self.parent.assertEqual(result.loss.shape      ,				()					)
									self.parent.assertEqual(result.logits.shape      ,				(self.batch_size, self.seq_length, self.vocab_size)					)


							def 			_A       (self      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				*lowerCAmelCase					):
									__lowercase=			OpenAIGPTDoubleHeadsModel(lowerCAmelCase					)
									model.to(lowerCAmelCase					)
									model.eval()

									__lowercase=			model(lowerCAmelCase      ,				token_type_ids=lowerCAmelCase      ,				labels=lowerCAmelCase					)
									self.parent.assertEqual(result.loss.shape      ,				()					)
									self.parent.assertEqual(result.logits.shape      ,				(self.batch_size, self.seq_length, self.vocab_size)					)


							def 			_A       (self      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				*lowerCAmelCase					):
									__lowercase=			self.num_labels
									__lowercase=			OpenAIGPTForSequenceClassification(lowerCAmelCase					)
									model.to(lowerCAmelCase					)
									model.eval()

									__lowercase=			ids_tensor([self.batch_size]      ,				self.type_sequence_label_size					)
									__lowercase=			model(lowerCAmelCase      ,				token_type_ids=lowerCAmelCase      ,				labels=lowerCAmelCase					)
									self.parent.assertEqual(result.logits.shape      ,				(self.batch_size, self.num_labels)					)







							def 			_A       (self					):
									__lowercase=			self.prepare_config_and_inputs()
									(
									    (
									    __lowercase
									),							(
									    __lowercase
									),							(
									    __lowercase
									),							(
									    __lowercase
									),							(
									    __lowercase
									),							(
									    __lowercase
									),							(
									    __lowercase
									),							
									)=			config_and_inputs
									__lowercase=			{
									    'input_ids': input_ids,
									    'token_type_ids': token_type_ids,
									    'head_mask': head_mask,
									}

									return config, inputs_dict





@require_torch
class       A    (   A_					,				A_					,				A_					,				unittest.TestCase ):
							UpperCamelCase_   :							Optional[Any]       =(
							    (OpenAIGPTModel, OpenAIGPTLMHeadModel, OpenAIGPTDoubleHeadsModel, OpenAIGPTForSequenceClassification)
							    if is_torch_available()
							    else ()
							)
							UpperCamelCase_   :							Tuple       =(
							    (OpenAIGPTLMHeadModel,) if is_torch_available() else ()
							)  # TODO (PVP): Add Double HeadsModel when generate() function is changed accordingly
							UpperCamelCase_   :							List[str]       =(
							    {
							        '''feature-extraction''': OpenAIGPTModel,
							        '''text-classification''': OpenAIGPTForSequenceClassification,
							        '''text-generation''': OpenAIGPTLMHeadModel,
							        '''zero-shot''': OpenAIGPTForSequenceClassification,
							    }
							    if is_torch_available()
							    else {}
							)


							def 			_A       (self      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase					):
									if pipeline_test_casse_name == "ZeroShotClassificationPipelineTests":
											# Get `tokenizer does not have a padding token` error for both fast/slow tokenizers.
											# `OpenAIGPTConfig` was never used in pipeline tests, either because of a missing checkpoint or because a
											# tiny config could not be created.
											return True

									return False


							def 			_A       (self      ,				lowerCAmelCase      ,				lowerCAmelCase      ,				lowerCAmelCase=False					):
									__lowercase=			super()._prepare_for_class(lowerCAmelCase      ,				lowerCAmelCase      ,				return_labels=lowerCAmelCase					)

									if return_labels:
											if model_class.__name__ == "OpenAIGPTDoubleHeadsModel":
													__lowercase=			torch.zeros(
													    (self.model_tester.batch_size, self.model_tester.num_choices, self.model_tester.seq_length)      ,				dtype=torch.long      ,				device=lowerCAmelCase      ,				)
													__lowercase=			inputs_dict['labels']
													__lowercase=			inputs_dict['labels']
													__lowercase=			torch.zeros(
													    (self.model_tester.batch_size, self.model_tester.num_choices)      ,				dtype=torch.long      ,				device=lowerCAmelCase      ,				)
													__lowercase=			torch.zeros(
													    self.model_tester.batch_size      ,				dtype=torch.long      ,				device=lowerCAmelCase					)
									return inputs_dict


							def 			_A       (self					):
									__lowercase=			OpenAIGPTModelTester(self					)
									__lowercase=			ConfigTester(self      ,				config_class=lowerCAmelCase      ,				n_embd=3_7					)


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


							def 			_A       (self					):
									__lowercase=			self.model_tester.prepare_config_and_inputs()
									self.model_tester.create_and_check_openai_gpt_model(*lowerCAmelCase					)


							def 			_A       (self					):
									__lowercase=			self.model_tester.prepare_config_and_inputs()
									self.model_tester.create_and_check_lm_head_model(*lowerCAmelCase					)


							def 			_A       (self					):
									__lowercase=			self.model_tester.prepare_config_and_inputs()
									self.model_tester.create_and_check_double_lm_head_model(*lowerCAmelCase					)


							def 			_A       (self					):
									__lowercase=			self.model_tester.prepare_config_and_inputs()
									self.model_tester.create_and_check_openai_gpt_for_sequence_classification(*lowerCAmelCase					)







							@slow
							def 			_A       (self					):
									for model_name in OPENAI_GPT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]:
											__lowercase=			OpenAIGPTModel.from_pretrained(lowerCAmelCase					)
											self.assertIsNotNone(lowerCAmelCase					)





@require_torch
class       A    (   unittest.TestCase ):


							@slow
							def 			_A       (self					):
									__lowercase=			OpenAIGPTLMHeadModel.from_pretrained('openai-gpt'					)
									model.to(lowerCAmelCase					)
									__lowercase=			torch.tensor([[4_8_1, 4_7_3_5, 5_4_4]]      ,				dtype=torch.long      ,				device=lowerCAmelCase					)  # the president is
									__lowercase=			[
									    4_8_1,
									    4_7_3_5,
									    5_4_4,
									    2_4_6,
									    9_6_3,
									    8_7_0,
									    7_6_2,
									    2_3_9,
									    2_4_4,
									    4_0_4_7_7,
									    2_4_4,
									    2_4_9,
									    7_1_9,
									    8_8_1,
									    4_8_7,
									    5_4_4,
									    2_4_0,
									    2_4_4,
									    6_0_3,
									    4_8_1,
									]  # the president is a very good man. " \n " i\'m sure he is, " said the

									__lowercase=			model.generate(lowerCAmelCase      ,				do_sample=lowerCAmelCase					)
									self.assertListEqual(output_ids[0].tolist()      ,				lowerCAmelCase					)






