



from collections import deque

from .hash_table import HashTable






class      UpperCamelCase    (						_UpperCAmelCase     ):



	def __init__(       self			,	*UpperCAmelCase__			,	**UpperCAmelCase__		):
							super().__init__(*UpperCAmelCase__			,	**UpperCAmelCase__		)



	def 			__A							(       self			,	UpperCAmelCase__			,	UpperCAmelCase__		):
							A__							=       deque([]		) if self.values[key] is None else self.values[key]
							self.values[key].appendleft(UpperCAmelCase__		)
							A__							=       self.values[key]



	def 			__A							(       self		):
							return (
							    sum(self.charge_factor - len(UpperCAmelCase__		) for slot in self.values		)
							    / self.size_table
							    * self.charge_factor
							)



	def 			__A							(       self			,	UpperCAmelCase__			,	UpperCAmelCase__=None		):
							if not (
							    len(self.values[key]		) == self.charge_factor and self.values.count(UpperCAmelCase__		) == 0
							):
													return key
							return super()._collision_resolution(UpperCAmelCase__			,	UpperCAmelCase__		)










import datasets

from .evaluate import evaluate


UpperCAmelCase_							:      List[Any]      =  "\\n@inproceedings{Rajpurkar2016SQuAD10,\n  title={SQuAD: 100, 000+ Questions for Machine Comprehension of Text},\n  author={Pranav Rajpurkar and Jian Zhang and Konstantin Lopyrev and Percy Liang},\n  booktitle={EMNLP},\n  year={2016}\n}\n"

UpperCAmelCase_							:      Any      =  "\nThis metric wrap the official scoring script for version 1 of the Stanford Question Answering Dataset (SQuAD).\n\nStanford Question Answering Dataset (SQuAD) is a reading comprehension dataset, consisting of questions posed by\ncrowdworkers on a set of Wikipedia articles, where the answer to every question is a segment of text, or span,\nfrom the corresponding reading passage, or the question might be unanswerable.\n"

UpperCAmelCase_							:      Tuple      =  "\nComputes SQuAD scores (F1 and EM).\nArgs:\n    predictions: List of question-answers dictionaries with the following key-values:\n        - 'id': id of the question-answer pair as given in the references (see below)\n        - 'prediction_text': the text of the answer\n    references: List of question-answers dictionaries with the following key-values:\n        - 'id': id of the question-answer pair (see above),\n        - 'answers': a Dict in the SQuAD dataset format\n            {\n                'text': list of possible texts for the answer, as a list of strings\n                'answer_start': list of start positions for the answer, as a list of ints\n            }\n            Note that answer_start values are not taken into account to compute the metric.\nReturns:\n    'exact_match': Exact match (the normalized answer exactly match the gold answer)\n    'f1': The F-score of predicted tokens versus the gold answer\nExamples:\n\n    >>> predictions = [{'prediction_text': '1976', 'id': '56e10a3be3433e1400422b22'}]\n    >>> references = [{'answers': {'answer_start': [97], 'text': ['1976']}, 'id': '56e10a3be3433e1400422b22'}]\n    >>> squad_metric = datasets.load_metric(\"squad\")\n    >>> results = squad_metric.compute(predictions=predictions, references=references)\n    >>> print(results)\n    {'exact_match': 100.0, 'f1': 100.0}\n"






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



	def 			__A							(       self		):
							return datasets.MetricInfo(
							    description=_DESCRIPTION			,	citation=_CITATION			,	inputs_description=_KWARGS_DESCRIPTION			,	features=datasets.Features(
							        {
							            "predictions": {"id": datasets.Value("string"		), "prediction_text": datasets.Value("string"		)},
							            "references": {
							                "id": datasets.Value("string"		),
							                "answers": datasets.features.Sequence(
							                    {
							                        "text": datasets.Value("string"		),
							                        "answer_start": datasets.Value("int32"		),
							                    }		),
							            },
							        }		)			,	codebase_urls=["https://rajpurkar.github.io/SQuAD-explorer/"]			,	reference_urls=["https://rajpurkar.github.io/SQuAD-explorer/"]			,	)



	def 			__A							(       self			,	UpperCAmelCase__			,	UpperCAmelCase__		):
							A__							=       {prediction["id"]: prediction["prediction_text"] for prediction in predictions}
							A__							=       [
							    {
							        "paragraphs": [
							            {
							                "qas": [
							                    {
							                        "answers": [{"text": answer_text} for answer_text in ref["answers"]["text"]],
							                        "id": ref["id"],
							                    }
							                    for ref in references
							                ]
							            }
							        ]
							    }
							]
							A__							=       evaluate(dataset=UpperCAmelCase__			,	predictions=UpperCAmelCase__		)
							return score





