


'''simple docstring'''






import numpy as np

import datasets


__UpperCAmelCase       =							'''
Compute the Mahalanobis Distance

Mahalonobis distance is the distance between a point and a distribution.
And not between two distinct points. It is effectively a multivariate equivalent of the Euclidean distance.
It was introduced by Prof. P. C. Mahalanobis in 1936
and has been used in various statistical applications ever since
[source: https://www.machinelearningplus.com/statistics/mahalanobis-distance/]
'''

__UpperCAmelCase       =							'''\
@article{de2000mahalanobis,
  title={The mahalanobis distance},
  author={De Maesschalck, Roy and Jouan-Rimbaud, Delphine and Massart, D{\'e}sir{\'e} L},
  journal={Chemometrics and intelligent laboratory systems},
  volume={50},
  number={1},
  pages={1--18},
  year={2000},
  publisher={Elsevier}
}
'''

__UpperCAmelCase       =							'''
Args:
    X: List of datapoints to be compared with the `reference_distribution`.
    reference_distribution: List of datapoints from the reference distribution we want to compare to.
Returns:
    mahalanobis: The Mahalonobis distance for each datapoint in `X`.
Examples:

    >>> mahalanobis_metric = datasets.load_metric("mahalanobis")
    >>> results = mahalanobis_metric.compute(reference_distribution=[[0, 1], [1, 0]], X=[[0, 1]])
    >>> print(results)
    {\'mahalanobis\': array([0.5])}
'''




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





							'''simple docstring'''






							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Any:
														return datasets.MetricInfo(
														    description=_DESCRIPTION ,   citation=_CITATION ,   inputs_description=_KWARGS_DESCRIPTION ,   features=datasets.Features(
														        {
														            '''X''': datasets.Sequence(datasets.Value('''float''' ,   id='''sequence'''       ) ,   id='''X'''       ),
														        }       ) ,   )







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_ ,   lowerCamelCase_       )	->							str:
														# convert to numpy arrays
														lowerCAmelCase__	       =     np.array(lowerCamelCase_       )
														lowerCAmelCase__	       =     np.array(lowerCamelCase_       )

														# Assert that arrays are 2D
														if len(X.shape       ) != 2:
																					raise ValueError('''Expected `X` to be a 2D vector'''       )
														if len(reference_distribution.shape       ) != 2:
																					raise ValueError('''Expected `reference_distribution` to be a 2D vector'''       )
														if reference_distribution.shape[0] < 2:
																					raise ValueError(
																					    '''Expected `reference_distribution` to be a 2D vector with more than one element in the first dimension'''       )

														# Get mahalanobis distance for each prediction
														lowerCAmelCase__	       =     X - np.mean(lowerCamelCase_       )
														lowerCAmelCase__	       =     np.cov(reference_distribution.T       )
														try:
																					lowerCAmelCase__	       =     np.linalg.inv(lowerCamelCase_       )
														except np.linalg.LinAlgError:
																					lowerCAmelCase__	       =     np.linalg.pinv(lowerCamelCase_       )
														lowerCAmelCase__	       =     np.dot(lowerCamelCase_ ,   lowerCamelCase_       )
														lowerCAmelCase__	       =     np.dot(lowerCamelCase_ ,   X_minus_mu.T       ).diagonal()

														return {"mahalanobis": mahal_dist}



'''simple docstring'''






import json
import os
import unittest

from transformers import CLIPTokenizer, CLIPTokenizerFast
from transformers.models.clip.tokenization_clip import VOCAB_FILES_NAMES
from transformers.testing_utils import require_ftfy, require_tokenizers

from ...test_tokenization_common import TokenizerTesterMixin




@require_tokenizers
class 		a__    (							a__    ,    unittest.TestCase  ):





							'''simple docstring'''






							lowercase__      :       List[Any]     						=				CLIPTokenizer
							lowercase__      :       List[str]     						=				CLIPTokenizerFast
							lowercase__      :       Dict     						=				True
							lowercase__      :       Any     						=				{}
							lowercase__      :       Optional[int]     						=				False







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Any:
														super().setUp()

														# fmt: off
														lowerCAmelCase__	       =     ['''l''', '''o''', '''w''', '''e''', '''r''', '''s''', '''t''', '''i''', '''d''', '''n''', '''lo''', '''l</w>''', '''w</w>''', '''r</w>''', '''t</w>''', '''low</w>''', '''er</w>''', '''lowest</w>''', '''newer</w>''', '''wider''', '''<unk>''', '''<|startoftext|>''', '''<|endoftext|>''']
														# fmt: on
														lowerCAmelCase__	       =     dict(zip(lowerCamelCase_ ,   range(len(lowerCamelCase_       )       )       )       )
														lowerCAmelCase__	       =     ['''#version: 0.2''', '''l o''', '''lo w</w>''', '''e r</w>''']
														lowerCAmelCase__	       =     {'''unk_token''': '''<unk>'''}

														lowerCAmelCase__	       =     os.path.join(self.tmpdirname ,   VOCAB_FILES_NAMES['''vocab_file''']       )
														lowerCAmelCase__	       =     os.path.join(self.tmpdirname ,   VOCAB_FILES_NAMES['''merges_file''']       )
														with open(self.vocab_file ,   '''w''' ,   encoding='''utf-8'''       ) as fp:
																					fp.write(json.dumps(lowerCamelCase_       ) + '''\n'''       )
														with open(self.merges_file ,   '''w''' ,   encoding='''utf-8'''       ) as fp:
																					fp.write('''\n'''.join(lowerCamelCase_       )       )







							def   __SCREAMING_SNAKE_CASE							(		self ,   **lowerCamelCase_       )	->							Any:
														kwargs.update(self.special_tokens_map       )
														return CLIPTokenizer.from_pretrained(self.tmpdirname ,   **lowerCamelCase_       )







							def   __SCREAMING_SNAKE_CASE							(		self ,   **lowerCamelCase_       )	->							int:
														kwargs.update(self.special_tokens_map       )
														return CLIPTokenizerFast.from_pretrained(self.tmpdirname ,   **lowerCamelCase_       )







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_       )	->							Any:
														lowerCAmelCase__	       =     '''lower newer'''
														lowerCAmelCase__	       =     '''lower newer'''
														return input_text, output_text







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Union[str, Any]:
														lowerCAmelCase__	       =     CLIPTokenizer(self.vocab_file ,   self.merges_file ,   **self.special_tokens_map       )
														lowerCAmelCase__	       =     '''lower newer'''
														lowerCAmelCase__	       =     ['''lo''', '''w''', '''er</w>''', '''n''', '''e''', '''w''', '''er</w>''']
														lowerCAmelCase__	       =     tokenizer.tokenize(lowerCamelCase_       )
														self.assertListEqual(lowerCamelCase_ ,   lowerCamelCase_       )

														lowerCAmelCase__	       =     tokens + [tokenizer.unk_token]
														lowerCAmelCase__	       =     [10, 2, 16, 9, 3, 2, 16, 20]
														self.assertListEqual(tokenizer.convert_tokens_to_ids(lowerCamelCase_       ) ,   lowerCamelCase_       )







							@require_ftfy
							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Tuple:
														for tokenizer, pretrained_name, kwargs in self.tokenizers_list:
																					with self.subTest(F"""{tokenizer.__class__.__name__} ({pretrained_name})"""       ):
																												lowerCAmelCase__	       =     self.tokenizer_class.from_pretrained(lowerCamelCase_ ,   **lowerCamelCase_       )
																												lowerCAmelCase__	       =     self.rust_tokenizer_class.from_pretrained(lowerCamelCase_ ,   **lowerCamelCase_       )

																												lowerCAmelCase__	       =     '''A\n\'ll 11p223RF☆ho!!to?\'d\'d\'\'d of a cat to-$\'\'d.'''
																												lowerCAmelCase__	       =     tokenizer_s.tokenize(lowerCamelCase_       )
																												lowerCAmelCase__	       =     tokenizer_r.tokenize(lowerCamelCase_       )

																												self.assertListEqual(lowerCamelCase_ ,   lowerCamelCase_       )

																												# Test that the tokenization is identical on an example containing a character (Latin Small Letter A
																												# with Tilde) encoded in 2 different ways
																												lowerCAmelCase__	       =     '''xa\u0303y''' + ''' ''' + '''x\xe3y'''
																												lowerCAmelCase__	       =     tokenizer_s.tokenize(lowerCamelCase_       )
																												lowerCAmelCase__	       =     tokenizer_r.tokenize(lowerCamelCase_       )

																												self.assertListEqual(lowerCamelCase_ ,   lowerCamelCase_       )

																												# Test that the tokenization is identical on unicode of space type
																												lowerCAmelCase__	       =     [
																												    '''\u0009''',  # (horizontal tab, '\t')
																												    '''\u000B''',  # (vertical tab)
																												    '''\u000C''',  # (form feed)
																												    '''\u0020''',  # (space, ' ')
																												    '''\u200E''',  # (left-to-right mark):w
																												    '''\u200F''',  # (right-to-left mark)
																												]
																												for unicode_seq in spaces_unicodes:
																																			lowerCAmelCase__	       =     tokenizer_s.tokenize(lowerCamelCase_       )
																																			lowerCAmelCase__	       =     tokenizer_r.tokenize(lowerCamelCase_       )

																																			self.assertListEqual(lowerCamelCase_ ,   lowerCamelCase_       )

																												# Test that the tokenization is identical on unicode of line break type
																												lowerCAmelCase__	       =     [
																												    '''\u000A''',  # (line feed, '\n')
																												    '''\r\n''',  # (carriage return and line feed, '\r\n')
																												    '''\u000D''',  # (carriage return, '\r')
																												    '''\r''',  # (carriage return, '\r')
																												    '''\u000D''',  # (carriage return, '\r')
																												    '''\u2028''',  # (line separator)
																												    '''\u2029''',  # (paragraph separator)
																												    # "\u0085", # (next line)
																												]

																												# The tokenization is not identical for the character "\u0085" (next line). The slow version using ftfy transforms
																												# it into the Horizontal Ellipsis character "…" ("\u2026") while the fast version transforms it into a
																												# space (and thus into an empty list).

																												for unicode_seq in line_break_unicodes:
																																			lowerCAmelCase__	       =     tokenizer_s.tokenize(lowerCamelCase_       )
																																			lowerCAmelCase__	       =     tokenizer_r.tokenize(lowerCamelCase_       )

																																			self.assertListEqual(lowerCamelCase_ ,   lowerCamelCase_       )







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							str:
														# Test which aims to verify that the offsets are well adapted to the argument `add_prefix_space`
														for tokenizer, pretrained_name, kwargs in self.tokenizers_list:
																					with self.subTest(F"""{tokenizer.__class__.__name__} ({pretrained_name})"""       ):
																												lowerCAmelCase__	       =     '''hello'''  # `hello` is a token in the vocabulary of `pretrained_name`
																												lowerCAmelCase__	       =     F"""{text_of_1_token} {text_of_1_token}"""

																												lowerCAmelCase__	       =     self.rust_tokenizer_class.from_pretrained(
																												    lowerCamelCase_ ,   use_fast=lowerCamelCase_ ,   )
																												lowerCAmelCase__	       =     tokenizer_r(lowerCamelCase_ ,   return_offsets_mapping=lowerCamelCase_ ,   add_special_tokens=lowerCamelCase_       )
																												self.assertEqual(encoding.offset_mapping[0] ,   (0, len(lowerCamelCase_       ))       )
																												self.assertEqual(
																												    encoding.offset_mapping[1] ,   (len(lowerCamelCase_       ) + 1, len(lowerCamelCase_       ) + 1 + len(lowerCamelCase_       )) ,   )

																												lowerCAmelCase__	       =     F""" {text}"""

																												lowerCAmelCase__	       =     self.rust_tokenizer_class.from_pretrained(
																												    lowerCamelCase_ ,   use_fast=lowerCamelCase_ ,   )
																												lowerCAmelCase__	       =     tokenizer_r(lowerCamelCase_ ,   return_offsets_mapping=lowerCamelCase_ ,   add_special_tokens=lowerCamelCase_       )
																												self.assertEqual(encoding.offset_mapping[0] ,   (1, 1 + len(lowerCamelCase_       ))       )
																												self.assertEqual(
																												    encoding.offset_mapping[1] ,   (1 + len(lowerCamelCase_       ) + 1, 1 + len(lowerCamelCase_       ) + 1 + len(lowerCamelCase_       )) ,   )







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Union[str, Any]:
														# Test related to the breaking change introduced in transformers v4.17.0
														# We need to check that an error in raised when the user try to load a previous version of the tokenizer.
														with self.assertRaises(lowerCamelCase_       ) as context:
																					self.rust_tokenizer_class.from_pretrained('''robot-test/old-clip-tokenizer'''       )

														self.assertTrue(
														    context.exception.args[0].startswith(
														        '''The `backend_tokenizer` provided does not match the expected format.'''       )       )







							@require_ftfy
							def   __SCREAMING_SNAKE_CASE							(		self       )	->							List[Any]:
														super().test_tokenization_python_rust_equals()







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Any:
														# CLIP always lower cases letters
														pass