






import comet  # From: unbabel-comet
import torch

import datasets


a__       =     datasets.logging.get_logger(__name__)

a__       =     """\
@inproceedings{rei-EtAl:2020:WMT,
   author    = {Rei, Ricardo  and  Stewart, Craig  and  Farinha, Ana C  and  Lavie, Alon},
   title     = {Unbabel's Participation in the WMT20 Metrics Shared Task},
   booktitle      = {Proceedings of the Fifth Conference on Machine Translation},
   month          = {November},
   year           = {2020},
   address        = {Online},
   publisher      = {Association for Computational Linguistics},
   pages     = {909--918},
}
@inproceedings{rei-etal-2020-comet,
   title = \"{COMET}: A Neural Framework for {MT} Evaluation\",
   author = \"Rei, Ricardo  and
      Stewart, Craig  and
      Farinha, Ana C  and
      Lavie, Alon\",
   booktitle = \"Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)\",
   month = nov,
   year = \"2020\",
   address = \"Online\",
   publisher = \"Association for Computational Linguistics\",
   url = \"https://www.aclweb.org/anthology/2020.emnlp-main.213\",
   pages = \"2685--2702\",
}
"""

a__       =     """\
Crosslingual Optimized Metric for Evaluation of Translation (COMET) is an open-source framework used to train Machine Translation metrics that achieve high levels of correlation with different types of human judgments (HTER, DA's or MQM).
With the release of the framework the authors also released fully trained models that were used to compete in the WMT20 Metrics Shared Task achieving SOTA in that years competition.

See the [README.md] file at https://unbabel.github.io/COMET/html/models.html for more information.
"""

a__       =     """
COMET score.

Args:

`sources` (list of str): Source sentences
`predictions` (list of str): candidate translations
`references` (list of str): reference translations
`cuda` (bool): If set to True, runs COMET using GPU
`show_progress` (bool): Shows progress
`model`: COMET model to be used. Will default to `wmt-large-da-estimator-1719` if None.

Returns:
    `samples`: List of dictionaries with `src`, `mt`, `ref` and `score`.
    `scores`: List of scores.

Examples:

    >>> comet_metric = datasets.load_metric('comet')
    >>> # comet_metric = load_metric('comet', 'wmt20-comet-da')  # you can also choose which model to use
    >>> source = [\"Dem Feuer konnte Einhalt geboten werden\", \"Schulen und Kindergärten wurden eröffnet.\"]
    >>> hypothesis = [\"The fire could be stopped\", \"Schools and kindergartens were open\"]
    >>> reference = [\"They were able to control the fire.\", \"Schools and kindergartens opened\"]
    >>> results = comet_metric.compute(predictions=hypothesis, references=reference, sources=source)
    >>> print([round(v, 2) for v in results[\"scores\"]])
    [0.19, 0.92]
"""


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



				"""simple docstring"""



				def 					__magic_name__							(      self    :    Optional[Any]):






											'''simple docstring'''







											return datasets.MetricInfo(
											    description=_DESCRIPTION			,		citation=_CITATION			,		homepage="""https://unbabel.github.io/COMET/html/index.html"""			,		inputs_description=_KWARGS_DESCRIPTION			,		features=datasets.Features(
											        {
											            """sources""": datasets.Value("""string"""			,		id="""sequence"""),
											            """predictions""": datasets.Value("""string"""			,		id="""sequence"""),
											            """references""": datasets.Value("""string"""			,		id="""sequence"""),
											        })			,		codebase_urls=["""https://github.com/Unbabel/COMET"""]			,		reference_urls=[
											        """https://github.com/Unbabel/COMET""",
											        """https://www.aclweb.org/anthology/2020.emnlp-main.213/""",
											        """http://www.statmt.org/wmt20/pdf/2020.wmt-1.101.pdf6""",
											    ]			,		)



				def 					__magic_name__							(      self    :    str			,		UpperCamelCase__    :    Dict):






											'''simple docstring'''







											if self.config_name == "default":
																		snake_case__	  =       comet.load_from_checkpoint(comet.download_model("""wmt20-comet-da"""))
											else:
																		snake_case__	  =       comet.load_from_checkpoint(comet.download_model(self.config_name))



				def 					__magic_name__							(      self    :    List[str]			,		UpperCamelCase__    :    str			,		UpperCamelCase__    :    Tuple			,		UpperCamelCase__    :    List[Any]			,		UpperCamelCase__    :    int=None			,		UpperCamelCase__    :    List[Any]=False):






											'''simple docstring'''







											if gpus is None:
																		snake_case__	  =       1 if torch.cuda.is_available() else 0
											snake_case__	  =       {"""src""": sources, """mt""": predictions, """ref""": references}
											snake_case__	  =       [dict(zip(UpperCamelCase__			,		UpperCamelCase__)) for t in zip(*data.values())]
											snake_case__  , snake_case__	  =       self.scorer.predict(UpperCamelCase__			,		gpus=UpperCamelCase__			,		progress_bar=UpperCamelCase__)
											return {"mean_score": mean_score, "scores": scores}








from typing import List, Optional, Union

import numpy as np
import tensorflow as tf

from .utils import logging


a__       =     logging.get_logger(__name__)

def _UpperCAmelCase   (	a						:	Union[tf.Tensor, np.ndarray] ):
							if isinstance(a  ,					np.ndarray ):
														return list(tensor.shape )

							snake_case__	  =       tf.shape(a )

							if tensor.shape == tf.TensorShape(a ):
														return dynamic

							snake_case__	  =       tensor.shape.as_list()

							return [dynamic[i] if s is None else s for i, s in enumerate(a )]

def _UpperCAmelCase   (	a						:	tf.Tensor  ,					a						:	Optional[int] = None  ,					a						:	Optional[str] = None ):
							return tf.nn.softmax(logits=logits + 1e-9  ,					axis=a  ,					name=a )

def _UpperCAmelCase   (	a						:	Optional[int]  ,					a						:	Union[str, Any]  ,					a						:	Dict  ,					a						:	int=1e-5  ,					a						:	Dict=-1 ):
							# This is a very simplified functional layernorm, designed to duplicate
							# the functionality of PyTorch nn.functional.layer_norm when this is needed to port
							# models in Transformers.

							if weight.shape.rank != 1 or bias.shape.rank != 1 or not isinstance(a  ,					a ):
														raise NotImplementedError("""Only 1D weight and bias tensors are supported for now, with only a single axis.""" )

							# Get mean and variance on the axis to be normalized
							snake_case__  , snake_case__	  =       tf.nn.moments(a  ,					axes=[axis]  ,					keepdims=a )

							if axis != -1:
														# Reshape scale and weight to have the same rank as inputs, but with 1 dimensions
														# on every dimension except axis
														snake_case__	  =       [1] * inputs.shape.rank
														snake_case__	  =       shape_list(a )[axis]
														snake_case__	  =       tf.reshape(a  ,					a )
														snake_case__	  =       tf.reshape(a  ,					a )

							# Compute layer normalization using the batch_normalization
							# function.
							snake_case__	  =       tf.nn.batch_normalization(
							    a  ,					a  ,					a  ,					offset=a  ,					scale=a  ,					variance_epsilon=a  ,					)
							return outputs

def _UpperCAmelCase   (	a						:	Optional[int]  ,					a						:	Dict=0  ,					a						:	List[Any]=-1 ):
							# Replicates the behavior of torch.flatten in TF

							# If end_dim or start_dim is negative, count them from the end
							if end_dim < 0:
														end_dim += input.shape.rank
							if start_dim < 0:
														start_dim += input.shape.rank

							if start_dim == end_dim:
														return input

							snake_case__	  =       tf.shape(a )
							snake_case__	  =       tf.math.reduce_prod(in_shape[start_dim : end_dim + 1] )
							snake_case__	  =       tf.concat([in_shape[:start_dim], [flattened_dim], in_shape[end_dim + 1 :]]  ,					axis=0 )
							return tf.reshape(a  ,					a )

def _UpperCAmelCase   (	a						:	tf.Tensor ):
							if not isinstance(a  ,					tf.Tensor ):
														snake_case__	  =       tf.convert_to_tensor(a )  # Catches stray NumPy inputs
							if encoder_attention_mask.shape.rank == 3:
														snake_case__	  =       encoder_attention_mask[:, None, :, :]
							if encoder_attention_mask.shape.rank == 2:
														snake_case__	  =       encoder_attention_mask[:, None, None, :]
							# T5 has a mask that can compare sequence ids, we can simulate this here with this transposition
							# Cf. https://github.com/tensorflow/mesh/blob/8d2465e9bc93129b913b5ccc6a59aa97abd96ec6/mesh_tensorflow
							# /transformer/transformer_layers.py#L270
							# encoder_extended_attention_mask = (encoder_extended_attention_mask ==
							# encoder_extended_attention_mask.transpose(-1, -2))
							snake_case__	  =       (
							    tf.cast(1  ,					encoder_attention_mask.dtype ) - encoder_extended_attention_mask
							) * encoder_extended_attention_mask.dtype.min

							return encoder_extended_attention_mask

def _UpperCAmelCase   (	a						:	tf.Tensor  ,					a						:	int  ,					a						:	str = "input_ids" ):
							tf.debugging.assert_less(
							    a  ,					tf.cast(a  ,					dtype=tensor.dtype )  ,					message=(
							        F'''The maximum value of {tensor_name} ({tf.math.reduce_max(a )}) must be smaller than the embedding '''
							        F'''layer\'s input dimension ({embed_dim}). The likely cause is some problem at tokenization time.'''
							    )  ,					)

def _UpperCAmelCase   (	a						:	str  ,					a						:	Tuple  ,					a						:	Optional[int] ):
							snake_case__	  =       6_4512
							# Check that no item in `data` is larger than `HDF5_OBJECT_HEADER_LIMIT`
							# because in that case even chunking the array would not make the saving
							# possible.
							snake_case__	  =       [x for x in data if len(a ) > HDF5_OBJECT_HEADER_LIMIT]

							# Expecting this to never be true.
							if bad_attributes:
														raise RuntimeError(
														    """The following attributes cannot be saved to HDF5 file because """
														    F'''they are larger than {HDF5_OBJECT_HEADER_LIMIT} '''
														    F'''bytes: {bad_attributes}''' )

							snake_case__	  =       np.asarray(a )

							snake_case__	  =       1
							snake_case__	  =       np.array_split(a  ,					a )

							# This will never loop forever thanks to the test above.
							while any(x.nbytes > HDF5_OBJECT_HEADER_LIMIT for x in chunked_data ):
														num_chunks += 1
														snake_case__	  =       np.array_split(a  ,					a )

							if num_chunks > 1:
														for chunk_id, chunk_data in enumerate(a ):
																					snake_case__	  =       chunk_data
							else:
														snake_case__	  =       data

def _UpperCAmelCase   (	a						:	List[Any]  ,					a						:	Optional[int] ):
							if name in group.attrs:
														snake_case__	  =       [n.decode("""utf8""" ) if hasattr(a  ,					"""decode""" ) else n for n in group.attrs[name]]
							else:
														snake_case__	  =       []
														snake_case__	  =       0
														while "%s%d" % (name, chunk_id) in group.attrs:
																					data.extend(
																					    [n.decode("""utf8""" ) if hasattr(a  ,					"""decode""" ) else n for n in group.attrs["""%s%d""" % (name, chunk_id)]] )
																					chunk_id += 1
							return data



def _UpperCAmelCase   (	a						:	Optional[int] ):

							def _expand_single_ad_tensor(a						:	Any ):
														if isinstance(a  ,					tf.Tensor ) and t.shape.rank == 1:
																					return tf.expand_dims(a  ,					axis=-1 )
														return t

							return tf.nest.map_structure(_expand_single_ad_tensor  ,					a )
