
'''simple docstring'''







import functools
from contextlib import contextmanager

import bert_score
from packaging import version

import datasets
@contextmanager
def       snake_case_	(       ):



						"""simple docstring"""





						def filter_log(__SCREAMING_SNAKE_CASE      :				Dict							):
												return False if "This IS expected if you are initializing" in record.msg else True

						lowercase_			:  Tuple									= datasets.utils.logging.get_logger('''transformers.modeling_utils'''							)
						logger.addFilter(__SCREAMING_SNAKE_CASE							)
						try:
												yield
						finally:
												logger.removeFilter(__SCREAMING_SNAKE_CASE							)


_lowercase				:						Dict												= "\\n@inproceedings{bert-score,\n  title={BERTScore: Evaluating Text Generation with BERT},\n  author={Tianyi Zhang* and Varsha Kishore* and Felix Wu* and Kilian Q. Weinberger and Yoav Artzi},\n  booktitle={International Conference on Learning Representations},\n  year={2020},\n  url={https://openreview.net/forum?id=SkeHuCVFDr}\n}\n"

_lowercase				:						List[str]												= "\\nBERTScore leverages the pre-trained contextual embeddings from BERT and matches words in candidate and reference\nsentences by cosine similarity.\nIt has been shown to correlate with human judgment on sentence-level and system-level evaluation.\nMoreover, BERTScore computes precision, recall, and F1 measure, which can be useful for evaluating different language\ngeneration tasks.\n\nSee the project's README at https://github.com/Tiiiger/bert_score#readme for more information.\n"

_lowercase				:						str												= "\nBERTScore Metrics with the hashcode from a source against one or more references.\n\nArgs:\n    predictions (list of str): Prediction/candidate sentences.\n    references (list of str or list of list of str): Reference sentences.\n    lang (str): Language of the sentences; required (e.g. 'en').\n    model_type (str): Bert specification, default using the suggested\n        model for the target language; has to specify at least one of\n        `model_type` or `lang`.\n    num_layers (int): The layer of representation to use,\n        default using the number of layers tuned on WMT16 correlation data.\n    verbose (bool): Turn on intermediate status update.\n    idf (bool or dict): Use idf weighting; can also be a precomputed idf_dict.\n    device (str): On which the contextual embedding model will be allocated on.\n        If this argument is None, the model lives on cuda:0 if cuda is available.\n    nthreads (int): Number of threads.\n    batch_size (int): Bert score processing batch size,\n        at least one of `model_type` or `lang`. `lang` needs to be\n        specified when `rescale_with_baseline` is True.\n    rescale_with_baseline (bool): Rescale bertscore with pre-computed baseline.\n    baseline_path (str): Customized baseline file.\n    use_fast_tokenizer (bool): `use_fast` parameter passed to HF tokenizer. New in version 0.3.10.\n\nReturns:\n    precision: Precision.\n    recall: Recall.\n    f1: F1 score.\n    hashcode: Hashcode of the library.\n\nExamples:\n\n    >>> predictions = [\"hello there\", \"general kenobi\"]\n    >>> references = [\"hello there\", \"general kenobi\"]\n    >>> bertscore = datasets.load_metric(\"bertscore\")\n    >>> results = bertscore.compute(predictions=predictions, references=references, lang=\"en\")\n    >>> print([round(v, 2) for v in results[\"f1\"]])\n    [1.0, 1.0]\n"






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






					def 			_snake_case					(     self	):


											"""simple docstring"""





											return datasets.MetricInfo(
											    description=_DESCRIPTION       ,							citation=_CITATION       ,							homepage='''https://github.com/Tiiiger/bert_score'''       ,							inputs_description=_KWARGS_DESCRIPTION       ,							features=datasets.Features(
											        {
											            '''predictions''': datasets.Value('''string'''       ,							id='''sequence'''	),
											            '''references''': datasets.Sequence(datasets.Value('''string'''       ,							id='''sequence'''	)       ,							id='''references'''	),
											        }	)       ,							codebase_urls=['''https://github.com/Tiiiger/bert_score''']       ,							reference_urls=[
											        '''https://github.com/Tiiiger/bert_score''',
											        '''https://arxiv.org/abs/1904.09675''',
											    ]       ,							)






					def 			_snake_case					(     self       ,							__SCREAMING_SNAKE_CASE       ,							__SCREAMING_SNAKE_CASE       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=False       ,							__SCREAMING_SNAKE_CASE=False       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=64       ,							__SCREAMING_SNAKE_CASE=4       ,							__SCREAMING_SNAKE_CASE=False       ,							__SCREAMING_SNAKE_CASE=False       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=False       ,							):


											"""simple docstring"""





											lowercase_			:  Union[str, Any]									= bert_score.utils.get_hash
											lowercase_			:  Optional[Any]									= bert_score.BERTScorer

											if version.parse(bert_score.__version__	) >= version.parse('''0.3.10'''	):
																	lowercase_			:  List[str]									= functools.partial(__SCREAMING_SNAKE_CASE       ,							use_fast_tokenizer=__SCREAMING_SNAKE_CASE	)
																	lowercase_			:  Any									= functools.partial(__SCREAMING_SNAKE_CASE       ,							use_fast_tokenizer=__SCREAMING_SNAKE_CASE	)
											elif use_fast_tokenizer:
																	raise ImportWarning(
																	    '''To use a fast tokenizer, the module `bert-score>=0.3.10` is required, and the current version of `bert-score` doesn\'t match this condition.\n'''
																	    '''You can install it with `pip install "bert-score>=0.3.10"`.'''	)

											if model_type is None:
																	assert lang is not None, "either lang or model_type should be specified"
																	lowercase_			:  Optional[int]									= bert_score.utils.langamodel[lang.lower()]

											if num_layers is None:
																	lowercase_			:  str									= bert_score.utils.modelalayers[model_type]

											lowercase_			:  Optional[int]									= get_hash(
											    model=__SCREAMING_SNAKE_CASE       ,							num_layers=__SCREAMING_SNAKE_CASE       ,							idf=__SCREAMING_SNAKE_CASE       ,							rescale_with_baseline=__SCREAMING_SNAKE_CASE       ,							use_custom_baseline=baseline_path is not None       ,							)

											with filter_logging_context():
																	if not hasattr(self       ,							'''cached_bertscorer'''	) or self.cached_bertscorer.hash != hashcode:
																							lowercase_			:  Optional[int]									= scorer(
																							    model_type=__SCREAMING_SNAKE_CASE       ,							num_layers=__SCREAMING_SNAKE_CASE       ,							batch_size=__SCREAMING_SNAKE_CASE       ,							nthreads=__SCREAMING_SNAKE_CASE       ,							all_layers=__SCREAMING_SNAKE_CASE       ,							idf=__SCREAMING_SNAKE_CASE       ,							device=__SCREAMING_SNAKE_CASE       ,							lang=__SCREAMING_SNAKE_CASE       ,							rescale_with_baseline=__SCREAMING_SNAKE_CASE       ,							baseline_path=__SCREAMING_SNAKE_CASE       ,							)

											(lowercase_)			:  int									= self.cached_bertscorer.score(
											    cands=__SCREAMING_SNAKE_CASE       ,							refs=__SCREAMING_SNAKE_CASE       ,							verbose=__SCREAMING_SNAKE_CASE       ,							batch_size=__SCREAMING_SNAKE_CASE       ,							)
											lowercase_			:  List[Any]									= {
											    '''precision''': P.tolist(),
											    '''recall''': R.tolist(),
											    '''f1''': F.tolist(),
											    '''hashcode''': hashcode,
											}
											return output_dict






					def 			_snake_case					(     self       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=None       ,							**__SCREAMING_SNAKE_CASE	):


											"""simple docstring"""





											if references is not None:
																	lowercase_			:  Optional[int]									= [[ref] if isinstance(__SCREAMING_SNAKE_CASE       ,							__SCREAMING_SNAKE_CASE	) else ref for ref in references]
											super().add_batch(predictions=__SCREAMING_SNAKE_CASE       ,							references=__SCREAMING_SNAKE_CASE       ,							**__SCREAMING_SNAKE_CASE	)






					def 			_snake_case					(     self       ,							__SCREAMING_SNAKE_CASE=None       ,							__SCREAMING_SNAKE_CASE=None       ,							**__SCREAMING_SNAKE_CASE	):


											"""simple docstring"""





											if isinstance(__SCREAMING_SNAKE_CASE       ,							__SCREAMING_SNAKE_CASE	):
																	lowercase_			:  Optional[Any]									= [reference]
											super().add(prediction=__SCREAMING_SNAKE_CASE       ,							reference=__SCREAMING_SNAKE_CASE       ,							**__SCREAMING_SNAKE_CASE	)





'''simple docstring'''







from __future__ import annotations

from queue import Queue






class 				lowerCAmelCase__     :






					def __init__(     self	):


											"""simple docstring"""





											lowercase_			:  dict[int, list[int]]									= {}






					def 			_snake_case					(     self	):


											"""simple docstring"""





											for i in self.vertices:
																	print(__SCREAMING_SNAKE_CASE       ,							''' : '''       ,							''' -> '''.join([str(__SCREAMING_SNAKE_CASE	) for j in self.vertices[i]]	)	)






					def 			_snake_case					(     self       ,							__SCREAMING_SNAKE_CASE       ,							__SCREAMING_SNAKE_CASE	):


											"""simple docstring"""





											if from_vertex in self.vertices:
																	self.vertices[from_vertex].append(__SCREAMING_SNAKE_CASE	)
											else:
																	lowercase_			:  Optional[Any]									= [to_vertex]






					def 			_snake_case					(     self       ,							__SCREAMING_SNAKE_CASE	):


											"""simple docstring"""





											lowercase_			:  List[Any]									= set()

											# create a first in first out queue to store all the vertices for BFS
											lowercase_			:  Queue									= Queue()

											# mark the source node as visited and enqueue it
											visited.add(__SCREAMING_SNAKE_CASE	)
											queue.put(__SCREAMING_SNAKE_CASE	)

											while not queue.empty():
																	lowercase_			:  List[Any]									= queue.get()

																	# loop through all adjacent vertex and enqueue it if not yet visited
																	for adjacent_vertex in self.vertices[vertex]:
																							if adjacent_vertex not in visited:
																													queue.put(__SCREAMING_SNAKE_CASE	)
																													visited.add(__SCREAMING_SNAKE_CASE	)
											return visited


if __name__ == "__main__":
							from doctest import testmod

							testmod(verbose=True)

							_lowercase				:						Optional[int]												= Graph()
							g.add_edge(0, 1)
							g.add_edge(0, 2)
							g.add_edge(1, 2)
							g.add_edge(2, 0)
							g.add_edge(2, 3)
							g.add_edge(3, 3)

							g.print_graph()
							# 0  :  1 -> 2
							# 1  :  2
							# 2  :  0 -> 3
							# 3  :  3

							assert sorted(g.bfs(2)) == [0, 1, 2, 3]



