ethically.we.weat.calc_all_weat() - Code Metrics - Inspection of "Merge pull request #24 from EthicallyAI/dev" - ResponsiblyAI/responsibly - Measure and Improve Code Quality continuously with Scrutinizer

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by Shlomi

created 2019-06-14 13:09 UTC

ethically.we.weat.calc_all_weat() F

↳ Parent: ethically.we.weat

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Total Lines	100
Code Lines	56

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Lines	0
Ratio	0 %

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eloc	56
dl	0
loc	100
rs	2.9998
c	0
b	0
f	0
cc	15
nop	6

How to fix Long Method Complexity

"""
Compute WEAT score of a Word Embedding.

WEAT is a bias measurement method for word embedding,
which is inspired by the `IAT <https://en.wikipedia.org/wiki/Implicit-association_test>`_
(Implicit Association Test) for humans.
It measures the similarity between two sets of *target words*
(e.g., programmer, engineer, scientist, ... and nurse, teacher, librarian, ...)
and two sets of *attribute words* (e.g., man, male, ... and woman, female ...).
A p-value is calculated using a permutation-test.

Reference:
    - Caliskan, A., Bryson, J. J., & Narayanan, A. (2017).
      `Semantics derived automatically
      from language corpora contain human-like biases
      <http://opus.bath.ac.uk/55288/>`_.
      Science, 356(6334), 183-186.

.. important::
    The effect size and pvalue in the WEAT have
    entirely different meaning from those reported in IATs (original finding).
    Refer to the paper for more details.

Stimulus and original finding from:

- [0, 1, 2]
  A. G. Greenwald, D. E. McGhee, J. L. Schwartz,
  Measuring individual differences in implicit cognition:
  the implicit association test.,
  Journal of personality and social psychology 74, 1464 (1998).

- [3, 4]:
  M. Bertrand, S. Mullainathan, Are Emily and Greg more employable
  than Lakisha and Jamal? a field experiment on labor market discrimination,
  The American Economic Review 94, 991 (2004).

- [5, 6, 9]:
  B. A. Nosek, M. Banaji, A. G. Greenwald, Harvesting implicit group attitudes
  and beliefs from a demonstration web site.,
  Group Dynamics: Theory, Research, and Practice 6, 101 (2002).

- [7]:
  B. A. Nosek, M. R. Banaji, A. G. Greenwald, Math=male, me=female,
  therefore math≠me.,
  Journal of Personality and Social Psychology 83, 44 (2002).

- [8]
  P. D. Turney, P. Pantel, From frequency to meaning:
  Vector space models of semantics,
  Journal of Artificial Intelligence Research 37, 141 (2010).
"""

# pylint: disable=C0301

import copy
import random
import warnings

import numpy as np
import pandas as pd
from mlxtend.evaluate import permutation_test

from ethically.consts import RANDOM_STATE
from ethically.utils import _warning_setup
from ethically.we.data import WEAT_DATA
from ethically.we.utils import (
    assert_gensim_keyed_vectors, cosine_similarities_by_words,
)


FILTER_BY_OPTIONS = ['model', 'data']
RESULTS_DF_COLUMNS = ['Target words', 'Attrib. words',
                      'Nt', 'Na', 's', 'd', 'p']
PVALUE_METHODS = ['exact', 'approximate']
PVALUE_DEFUALT_METHOD = 'exact'
ORIGINAL_DF_COLUMNS = ['original_' + key for key in ['N', 'd', 'p']]
WEAT_WORD_SETS = ['first_target', 'second_target',
                  'first_attribute', 'second_attribute']
PVALUE_EXACT_WARNING_LEN = 10

_warning_setup()


def _calc_association_target_attributes(model, target_word,
                                        first_attribute_words,
                                        second_attribute_words):
    # pylint: disable=line-too-long

    assert_gensim_keyed_vectors(model)

    with warnings.catch_warnings():
        warnings.simplefilter('ignore', FutureWarning)

        first_mean = (cosine_similarities_by_words(model,
                                                   target_word,
                                                   first_attribute_words)
                      .mean())

        second_mean = (cosine_similarities_by_words(model,
                                                    target_word,
                                                    second_attribute_words)
                       .mean())

    return first_mean - second_mean


def _calc_association_all_targets_attributes(model, target_words,
                                             first_attribute_words,
                                             second_attribute_words):
    return [_calc_association_target_attributes(model, target_word,
                                                first_attribute_words,
                                                second_attribute_words)
            for target_word in target_words]


def _calc_weat_score(model,
                     first_target_words, second_target_words,
                     first_attribute_words, second_attribute_words):

    (first_associations,
     second_associations) = _calc_weat_associations(model,
                                                    first_target_words,
                                                    second_target_words,
                                                    first_attribute_words,
                                                    second_attribute_words)

    return sum(first_associations) - sum(second_associations)


def _calc_weat_pvalue(first_associations, second_associations,
                      method=PVALUE_DEFUALT_METHOD):

    if method not in PVALUE_METHODS:
        raise ValueError('method should be one of {}, {} was given'.format(
            PVALUE_METHODS, method))

    pvalue = permutation_test(first_associations, second_associations,
                              func=lambda x, y: sum(x) - sum(y),
                              method=method,
                              seed=RANDOM_STATE)  # if exact - no meaning
    return pvalue


def _calc_weat_associations(model,
                            first_target_words, second_target_words,
                            first_attribute_words, second_attribute_words):

    assert len(first_target_words) == len(second_target_words)
    assert len(first_attribute_words) == len(second_attribute_words)

    first_associations = _calc_association_all_targets_attributes(model,
                                                                  first_target_words,
                                                                  first_attribute_words,
                                                                  second_attribute_words)

    second_associations = _calc_association_all_targets_attributes(model,
                                                                   second_target_words,
                                                                   first_attribute_words,
                                                                   second_attribute_words)

    return first_associations, second_associations


def _filter_by_data_weat_stimuli(stimuli):
    """Filter WEAT stimuli words if there is a `remove` key.

    Some of the words from Caliskan et al. (2017) seems as not being used.

    Modifiy the stimuli object in place.
    """

    for group in stimuli:
        if 'remove' in stimuli[group]:
            words_to_remove = stimuli[group]['remove']
            stimuli[group]['words'] = [word for word in stimuli[group]['words']
                                       if word not in words_to_remove]


def _sample_if_bigger(seq, length):
    random.seed(RANDOM_STATE)
    if len(seq) > length:
        seq = random.sample(seq, length)
    return seq


def _filter_by_model_weat_stimuli(stimuli, model):
    """Filter WEAT stimuli words if they are not exists in the model.

    Modifiy the stimuli object in place.
    """

    for group_category in ['target', 'attribute']:
        first_group = 'first_' + group_category
        second_group = 'second_' + group_category

        first_words = [word for word in stimuli[first_group]['words']
                       if word in model]
        second_words = [word for word in stimuli[second_group]['words']
                        if word in model]

        min_len = min(len(first_words), len(second_words))

        # sample to make the first and second word set
        # with equal size
        first_words = _sample_if_bigger(first_words, min_len)
        second_words = _sample_if_bigger(second_words, min_len)

        first_words.sort()
        second_words.sort()

        stimuli[first_group]['words'] = first_words
        stimuli[second_group]['words'] = second_words


def _filter_weat_data(weat_data, model, filter_by):
    """inplace."""

    if filter_by not in FILTER_BY_OPTIONS:
        raise ValueError('filter_by should be one of {}, {} was given'.format(
            FILTER_BY_OPTIONS, filter_by))

    if filter_by == 'data':
        for stimuli in weat_data:
            _filter_by_data_weat_stimuli(stimuli)

    elif filter_by == 'model':
        for stimuli in weat_data:
            _filter_by_model_weat_stimuli(stimuli, model)


def calc_single_weat(model,
                     first_target, second_target,
                     first_attribute, second_attribute,
                     with_pvalue=True, pvalue_kwargs=None):
    """
    Calc the WEAT result of a word embedding.

    :param model: Word embedding model of ``gensim.model.KeyedVectors``
    :param dict first_target: First target words list and its name
    :param dict second_target: Second target words list and its name
    :param dict first_attribute: First attribute words list and its name
    :param dict second_attribute: Second attribute words list and its name
    :param bool with_pvalue: Whether to calculate the p-value of the
                             WEAT score (might be computationally expensive)
    :return: WEAT result (score, size effect, Nt, Na and p-value)
    """

    if pvalue_kwargs is None:
        pvalue_kwargs = {}

    (first_associations,
     second_associations) = _calc_weat_associations(model,
                                                    first_target['words'],
                                                    second_target['words'],
                                                    first_attribute['words'],
                                                    second_attribute['words'])

    if first_associations and second_associations:
        score = sum(first_associations) - sum(second_associations)
        std_dev = np.std(first_associations + second_associations, ddof=0)
        effect_size = ((np.mean(first_associations) - np.mean(second_associations))
                       / std_dev)

        pvalue = None
        if with_pvalue:
            pvalue = _calc_weat_pvalue(first_associations,
                                       second_associations,
                                       **pvalue_kwargs)
    else:
        score, std_dev, effect_size, pvalue = None, None, None, None

    return {'Target words': '{} vs. {}'.format(first_target['name'],
                                               second_target['name']),
            'Attrib. words': '{} vs. {}'.format(first_attribute['name'],
                                                second_attribute['name']),
            's': score,
            'd': effect_size,
            'p': pvalue,
            'Nt': '{}x2'.format(len(first_target['words'])),
            'Na': '{}x2'.format(len(first_attribute['words']))}


def calc_weat_pleasant_unpleasant_attribute(model,
                                            first_target, second_target,
                                            with_pvalue=True, pvalue_kwargs=None):
    """
    Calc the WEAT result with pleasent vs. unpleasant attributes.

    :param model: Word embedding model of ``gensim.model.KeyedVectors``
    :param dict first_target: First target words list and its name
    :param dict second_target: Second target words list and its name
    :param bool with_pvalue: Whether to calculate the p-value of the
                             WEAT score (might be computationally expensive)
    :return: WEAT result (score, size effect, Nt, Na and p-value)
    """

    weat_data = {'first_attribute': copy.deepcopy(WEAT_DATA[0]['first_attribute']),
                 'second_attribute': copy.deepcopy(WEAT_DATA[0]['second_attribute']),
                 'first_target': first_target,
                 'second_target': second_target}

    _filter_by_model_weat_stimuli(weat_data, model)

    if pvalue_kwargs is None:
        pvalue_kwargs = {}

    return calc_single_weat(model,
                            **weat_data,
                            with_pvalue=with_pvalue, pvalue_kwargs=pvalue_kwargs)


def calc_all_weat(model, weat_data='caliskan', filter_by='model',
                  with_original_finding=False,
                  with_pvalue=True, pvalue_kwargs=None):
    """
    Calc the WEAT results of a word embedding on multiple cases.

    Note that for the effect size and pvalue in the WEAT have
    entirely different meaning from those reported in IATs (original finding).
    Refer to the paper for more details.

    :param model: Word embedding model of ``gensim.model.KeyedVectors``
    :param dict weat_data: WEAT cases data.
                           - If `'caliskan'` (default) then all
                              the experiments from the original will be used.
                           - If an interger, then the specific experiment by index
                             from the original paper will be used.
                           - If a interger, then tje specific experiments by indices
                             from the original paper will be used.

    :param bool filter_by: Whether to filter the word lists
                           by the `model` (`'model'`)
                           or by the `remove` key in `weat_data` (`'data'`).
    :param bool with_original_finding: Show the origina
    :param bool with_pvalue: Whether to calculate the p-value of the
                             WEAT results (might be computationally expensive)
    :return: :class:`pandas.DataFrame` of WEAT results
             (score, size effect, Nt, Na and p-value)
    """

    if weat_data == 'caliskan':
        weat_data = WEAT_DATA
    elif isinstance(weat_data, int):
        index = weat_data
        weat_data = WEAT_DATA[index:index + 1]
    elif isinstance(weat_data, tuple):
        weat_data = [WEAT_DATA[index] for index in weat_data]

    if (not pvalue_kwargs
            or pvalue_kwargs['method'] == PVALUE_DEFUALT_METHOD):
        max_word_set_len = max(len(stimuli[ws]['words'])
                               for stimuli in weat_data
                               for ws in WEAT_WORD_SETS)
        if max_word_set_len > PVALUE_EXACT_WARNING_LEN:
            warnings.warn('At least one stimuli has a word set bigger'
                          ' than {}, and the computation might take a while.'
                          ' Consider using \'exact\' as method'
                          ' for pvalue_kwargs.'.format(PVALUE_EXACT_WARNING_LEN))

    actual_weat_data = copy.deepcopy(weat_data)

    _filter_weat_data(actual_weat_data,
                      model,
                      filter_by)

    if weat_data != actual_weat_data:
        warnings.warn('Given weat_data was filterd by {}.'
                      .format(filter_by))

    results = []
    for stimuli in actual_weat_data:
        result = calc_single_weat(model,
                                  stimuli['first_target'],
                                  stimuli['second_target'],
                                  stimuli['first_attribute'],
                                  stimuli['second_attribute'],
                                  with_pvalue, pvalue_kwargs)

        # TODO: refactor - check before if one group is without words
        # because of the filtering
        if not all(group['words'] for group in stimuli.values()
                   if 'words' in group):
            result['score'] = None
            result['effect_size'] = None
            result['pvalue'] = None

        result['stimuli'] = stimuli

        if with_original_finding:
            result.update({'original_' + k: v
                           for k, v in stimuli['original_finding'].items()})
        results.append(result)

    results_df = pd.DataFrame(results)
    results_df = results_df.replace('nan', None)
    results_df = results_df.fillna('')

    # if not results_df.empty:
    cols = RESULTS_DF_COLUMNS[:]
    if with_original_finding:
        cols += ORIGINAL_DF_COLUMNS
    if not with_pvalue:
        cols.remove('p')
    else:
        results_df['p'] = results_df['p'].apply(lambda pvalue: '{:0.1e}'.format(pvalue)  # pylint: disable=W0108
                                                if pvalue else pvalue)

    results_df = results_df[cols]
    results_df = results_df.round(4)

    return results_df


1			"""
2			Compute WEAT score of a Word Embedding.
3
4			WEAT is a bias measurement method for word embedding,
5			which is inspired by the `IAT <https://en.wikipedia.org/wiki/Implicit-association_test>`_
6			(Implicit Association Test) for humans.
7			It measures the similarity between two sets of target words
8			(e.g., programmer, engineer, scientist, ... and nurse, teacher, librarian, ...)
9			and two sets of attribute words (e.g., man, male, ... and woman, female ...).
10			A p-value is calculated using a permutation-test.
11
12			Reference:
13			- Caliskan, A., Bryson, J. J., & Narayanan, A. (2017).
14			`Semantics derived automatically
15			from language corpora contain human-like biases
16			<http://opus.bath.ac.uk/55288/>`_.
17			Science, 356(6334), 183-186.
18
19			.. important::
20			The effect size and pvalue in the WEAT have
21			entirely different meaning from those reported in IATs (original finding).
22			Refer to the paper for more details.
23
24			Stimulus and original finding from:
25
26			- [0, 1, 2]
27			A. G. Greenwald, D. E. McGhee, J. L. Schwartz,
28			Measuring individual differences in implicit cognition:
29			the implicit association test.,
30			Journal of personality and social psychology 74, 1464 (1998).
31
32			- [3, 4]:
33			M. Bertrand, S. Mullainathan, Are Emily and Greg more employable
34			than Lakisha and Jamal? a field experiment on labor market discrimination,
35			The American Economic Review 94, 991 (2004).
36
37			- [5, 6, 9]:
38			B. A. Nosek, M. Banaji, A. G. Greenwald, Harvesting implicit group attitudes
39			and beliefs from a demonstration web site.,
40			Group Dynamics: Theory, Research, and Practice 6, 101 (2002).
41
42			- [7]:
43			B. A. Nosek, M. R. Banaji, A. G. Greenwald, Math=male, me=female,
44			therefore math≠me.,
45			Journal of Personality and Social Psychology 83, 44 (2002).
46
47			- [8]
48			P. D. Turney, P. Pantel, From frequency to meaning:
49			Vector space models of semantics,
50			Journal of Artificial Intelligence Research 37, 141 (2010).
51			"""
52
53			# pylint: disable=C0301
54
55			import copy
56			import random
57			import warnings
58
59			import numpy as np
60			import pandas as pd
61			from mlxtend.evaluate import permutation_test
62
63			from ethically.consts import RANDOM_STATE
64			from ethically.utils import _warning_setup
65			from ethically.we.data import WEAT_DATA
66			from ethically.we.utils import (
67			assert_gensim_keyed_vectors, cosine_similarities_by_words,
68			)
69
70
71			FILTER_BY_OPTIONS = ['model', 'data']
72			RESULTS_DF_COLUMNS = ['Target words', 'Attrib. words',
73			'Nt', 'Na', 's', 'd', 'p']
74			PVALUE_METHODS = ['exact', 'approximate']
75			PVALUE_DEFUALT_METHOD = 'exact'
76			ORIGINAL_DF_COLUMNS = ['original_' + key for key in ['N', 'd', 'p']]
77			WEAT_WORD_SETS = ['first_target', 'second_target',
78			'first_attribute', 'second_attribute']
79			PVALUE_EXACT_WARNING_LEN = 10
80
81			_warning_setup()
82
83
84			def _calc_association_target_attributes(model, target_word,
85			first_attribute_words,
86			second_attribute_words):
87			# pylint: disable=line-too-long
88
89			assert_gensim_keyed_vectors(model)
90
91			with warnings.catch_warnings():
92			warnings.simplefilter('ignore', FutureWarning)
93
94			first_mean = (cosine_similarities_by_words(model,
95			target_word,
96			first_attribute_words)
97			.mean())
98
99			second_mean = (cosine_similarities_by_words(model,
100			target_word,
101			second_attribute_words)
102			.mean())
103
104			return first_mean - second_mean
105
106
107			def _calc_association_all_targets_attributes(model, target_words,
108			first_attribute_words,
109			second_attribute_words):
110			return [_calc_association_target_attributes(model, target_word,
111			first_attribute_words,
112			second_attribute_words)
113			for target_word in target_words]
114
115
116			def _calc_weat_score(model,
117			first_target_words, second_target_words,
118			first_attribute_words, second_attribute_words):
119
120			(first_associations,
121			second_associations) = _calc_weat_associations(model,
122			first_target_words,
123			second_target_words,
124			first_attribute_words,
125			second_attribute_words)
126
127			return sum(first_associations) - sum(second_associations)
128
129
130			def _calc_weat_pvalue(first_associations, second_associations,
131			method=PVALUE_DEFUALT_METHOD):
132
133			if method not in PVALUE_METHODS:
134			raise ValueError('method should be one of {}, {} was given'.format(
135			PVALUE_METHODS, method))
136
137			pvalue = permutation_test(first_associations, second_associations,
138			func=lambda x, y: sum(x) - sum(y),
139			method=method,
140			seed=RANDOM_STATE) # if exact - no meaning
141			return pvalue
142
143
144			def _calc_weat_associations(model,
145			first_target_words, second_target_words,
146			first_attribute_words, second_attribute_words):
147
148			assert len(first_target_words) == len(second_target_words)
149			assert len(first_attribute_words) == len(second_attribute_words)
150
151			first_associations = _calc_association_all_targets_attributes(model,
152			first_target_words,
153			first_attribute_words,
154			second_attribute_words)
155
156			second_associations = _calc_association_all_targets_attributes(model,
157			second_target_words,
158			first_attribute_words,
159			second_attribute_words)
160
161			return first_associations, second_associations
162
163
164			def _filter_by_data_weat_stimuli(stimuli):
165			"""Filter WEAT stimuli words if there is a `remove` key.
166
167			Some of the words from Caliskan et al. (2017) seems as not being used.
168
169			Modifiy the stimuli object in place.
170			"""
171
172			for group in stimuli:
173			if 'remove' in stimuli[group]:
174			words_to_remove = stimuli[group]['remove']
175			stimuli[group]['words'] = [word for word in stimuli[group]['words']
176			if word not in words_to_remove]
177
178
179			def _sample_if_bigger(seq, length):
180			random.seed(RANDOM_STATE)
181			if len(seq) > length:
182			seq = random.sample(seq, length)
183			return seq
184
185
186			def _filter_by_model_weat_stimuli(stimuli, model):
187			"""Filter WEAT stimuli words if they are not exists in the model.
188
189			Modifiy the stimuli object in place.
190			"""
191
192			for group_category in ['target', 'attribute']:
193			first_group = 'first_' + group_category
194			second_group = 'second_' + group_category
195
196			first_words = [word for word in stimuli[first_group]['words']
197			if word in model]
198			second_words = [word for word in stimuli[second_group]['words']
199			if word in model]
200
201			min_len = min(len(first_words), len(second_words))
202
203			# sample to make the first and second word set
204			# with equal size
205			first_words = _sample_if_bigger(first_words, min_len)
206			second_words = _sample_if_bigger(second_words, min_len)
207
208			first_words.sort()
209			second_words.sort()
210
211			stimuli[first_group]['words'] = first_words
212			stimuli[second_group]['words'] = second_words
213
214
215			def _filter_weat_data(weat_data, model, filter_by):
216			"""inplace."""
217
218			if filter_by not in FILTER_BY_OPTIONS:
219			raise ValueError('filter_by should be one of {}, {} was given'.format(
220			FILTER_BY_OPTIONS, filter_by))
221
222			if filter_by == 'data':
223			for stimuli in weat_data:
224			_filter_by_data_weat_stimuli(stimuli)
225
226			elif filter_by == 'model':
227			for stimuli in weat_data:
228			_filter_by_model_weat_stimuli(stimuli, model)
229
230
231			def calc_single_weat(model,
232			first_target, second_target,
233			first_attribute, second_attribute,
234			with_pvalue=True, pvalue_kwargs=None):
235			"""
236			Calc the WEAT result of a word embedding.
237
238			:param model: Word embedding model of ``gensim.model.KeyedVectors``
239			:param dict first_target: First target words list and its name
240			:param dict second_target: Second target words list and its name
241			:param dict first_attribute: First attribute words list and its name
242			:param dict second_attribute: Second attribute words list and its name
243			:param bool with_pvalue: Whether to calculate the p-value of the
244			WEAT score (might be computationally expensive)
245			:return: WEAT result (score, size effect, Nt, Na and p-value)
246			"""
247
248			if pvalue_kwargs is None:
249			pvalue_kwargs = {}
250
251			(first_associations,
252			second_associations) = _calc_weat_associations(model,
253			first_target['words'],
254			second_target['words'],
255			first_attribute['words'],
256			second_attribute['words'])
257
258			if first_associations and second_associations:
259			score = sum(first_associations) - sum(second_associations)
260			std_dev = np.std(first_associations + second_associations, ddof=0)
261			effect_size = ((np.mean(first_associations) - np.mean(second_associations))
262			/ std_dev)
263
264			pvalue = None
265			if with_pvalue:
266			pvalue = _calc_weat_pvalue(first_associations,
267			second_associations,
268			**pvalue_kwargs)
269			else:
270			score, std_dev, effect_size, pvalue = None, None, None, None
271
272			return {'Target words': '{} vs. {}'.format(first_target['name'],
273			second_target['name']),
274			'Attrib. words': '{} vs. {}'.format(first_attribute['name'],
275			second_attribute['name']),
276			's': score,
277			'd': effect_size,
278			'p': pvalue,
279			'Nt': '{}x2'.format(len(first_target['words'])),
280			'Na': '{}x2'.format(len(first_attribute['words']))}
281
282
283			def calc_weat_pleasant_unpleasant_attribute(model,
284			first_target, second_target,
285			with_pvalue=True, pvalue_kwargs=None):
286			"""
287			Calc the WEAT result with pleasent vs. unpleasant attributes.
288
289			:param model: Word embedding model of ``gensim.model.KeyedVectors``
290			:param dict first_target: First target words list and its name
291			:param dict second_target: Second target words list and its name
292			:param bool with_pvalue: Whether to calculate the p-value of the
293			WEAT score (might be computationally expensive)
294			:return: WEAT result (score, size effect, Nt, Na and p-value)
295			"""
296
297			weat_data = {'first_attribute': copy.deepcopy(WEAT_DATA[0]['first_attribute']),
298			'second_attribute': copy.deepcopy(WEAT_DATA[0]['second_attribute']),
299			'first_target': first_target,
300			'second_target': second_target}
301
302			_filter_by_model_weat_stimuli(weat_data, model)
303
304			if pvalue_kwargs is None:
305			pvalue_kwargs = {}
306
307			return calc_single_weat(model,
308			**weat_data,
309			with_pvalue=with_pvalue, pvalue_kwargs=pvalue_kwargs)
310
311
312			def calc_all_weat(model, weat_data='caliskan', filter_by='model',
313			with_original_finding=False,
314			with_pvalue=True, pvalue_kwargs=None):
315			"""
316			Calc the WEAT results of a word embedding on multiple cases.
317
318			Note that for the effect size and pvalue in the WEAT have
319			entirely different meaning from those reported in IATs (original finding).
320			Refer to the paper for more details.
321
322			:param model: Word embedding model of ``gensim.model.KeyedVectors``
323			:param dict weat_data: WEAT cases data.
324			- If `'caliskan'` (default) then all
325			the experiments from the original will be used.
326			- If an interger, then the specific experiment by index
327			from the original paper will be used.
328			- If a interger, then tje specific experiments by indices
329			from the original paper will be used.
330
331			:param bool filter_by: Whether to filter the word lists
332			by the `model` (`'model'`)
333			or by the `remove` key in `weat_data` (`'data'`).
334			:param bool with_original_finding: Show the origina
335			:param bool with_pvalue: Whether to calculate the p-value of the
336			WEAT results (might be computationally expensive)
337			:return: :class:`pandas.DataFrame` of WEAT results
338			(score, size effect, Nt, Na and p-value)
339			"""
340
341			if weat_data == 'caliskan':
342			weat_data = WEAT_DATA
343			elif isinstance(weat_data, int):
344			index = weat_data
345			weat_data = WEAT_DATA[index:index + 1]
346			elif isinstance(weat_data, tuple):
347			weat_data = [WEAT_DATA[index] for index in weat_data]
348
349			if (not pvalue_kwargs
350			or pvalue_kwargs['method'] == PVALUE_DEFUALT_METHOD):
351			max_word_set_len = max(len(stimuli[ws]['words'])
352			for stimuli in weat_data
353			for ws in WEAT_WORD_SETS)
354			if max_word_set_len > PVALUE_EXACT_WARNING_LEN:
355			warnings.warn('At least one stimuli has a word set bigger'
356			' than {}, and the computation might take a while.'
357			' Consider using \'exact\' as method'
358			' for pvalue_kwargs.'.format(PVALUE_EXACT_WARNING_LEN))
359
360			actual_weat_data = copy.deepcopy(weat_data)
361
362			_filter_weat_data(actual_weat_data,
363			model,
364			filter_by)
365
366			if weat_data != actual_weat_data:
367			warnings.warn('Given weat_data was filterd by {}.'
368			.format(filter_by))
369
370			results = []
371			for stimuli in actual_weat_data:
372			result = calc_single_weat(model,
373			stimuli['first_target'],
374			stimuli['second_target'],
375			stimuli['first_attribute'],
376			stimuli['second_attribute'],
377			with_pvalue, pvalue_kwargs)
378
379			# TODO: refactor - check before if one group is without words
380			# because of the filtering
381			if not all(group['words'] for group in stimuli.values()
382			if 'words' in group):
383			result['score'] = None
384			result['effect_size'] = None
385			result['pvalue'] = None
386
387			result['stimuli'] = stimuli
388
389			if with_original_finding:
390			result.update({'original_' + k: v
391			for k, v in stimuli['original_finding'].items()})
392			results.append(result)
393
394			results_df = pd.DataFrame(results)
395			results_df = results_df.replace('nan', None)
396			results_df = results_df.fillna('')
397
398			# if not results_df.empty:
399			cols = RESULTS_DF_COLUMNS[:]
400			if with_original_finding:
401			cols += ORIGINAL_DF_COLUMNS
402			if not with_pvalue:
403			cols.remove('p')
404			else:
405			results_df['p'] = results_df['p'].apply(lambda pvalue: '{:0.1e}'.format(pvalue) # pylint: disable=W0108
406			if pvalue else pvalue)
407
408			results_df = results_df[cols]
409			results_df = results_df.round(4)
410
411			return results_df
412

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