def one_hot_encode(self, dataframe):
one_cols = [
'events', 'zone', 'pitch_type', 'type', 'home_team', 'away_team',
'pitch_count', 'L1_pitch_type', 'L1_pitch_result', 'L1_pitch_zone',
'_count', 'count_cat', 'pitch_cat', 'balls', 'strikes','inning',
'outs_when_up', 'batting_order_slot', 'pitch_subtype', 'count_status'
]
one_hot_cols = []
for col in one_cols:
if col in dataframe.columns.tolist():
one_hot_cols.append(col)
# Instantiate Encoder
one_hot_encoder = OneHotEncoder(cols=one_hot_cols,
return_df=True,
use_cat_names=True)
# Encode features
encoded = one_hot_encoder.fit_transform(dataframe[one_hot_cols],
dataframe['next_pitch'])
# Join encoded features into df and drop old columns
dataframe = dataframe.join(encoded).drop(columns = one_hot_cols)
return dataframe
def fit(self, X, y):
"""
Generates and optimizes all legitimate pipelines. The best pipeline can be retrieved from `self.best_estimator_`
:param X: Training data
:param y: Corresponding observations
:return: `self`
"""
_X, _y = X, y
if self.cat_cols is not None:
from category_encoders.one_hot import OneHotEncoder
enc = OneHotEncoder(
cols=self.cat_cols, return_df=False, handle_unknown="ignore"
)
enc.fit(X)
_X = enc.transform(X)
X_, y_ = _X, _y
self.num_features = len(X_[0])
for l in range(1, self.length + 1):
self._cast(l, X_, y_)
self.best_estimator_ = list(self.get_top(1).items())[0][1][0]
self.best_estimator_score = list(self.get_top(1).items())[0][1][1]
return self
def encode_genotypes(df):
"""One-hot encode the genotypes
:param df: A DataFrame of samples with genotypes as columns
:type df: pandas DataFrame
:return: pandas DataFrame of one-hot encoded columns for genotypes and OHE instance
:rtype: pandas DataFrame, OneHotEncoder instance
"""
ohe = OneHotEncoder(cols=df.columns, handle_missing="return_nan")
X = ohe.fit_transform(df)
return pd.DataFrame(X, index=df.index), ohe
def transform_dataset(dataset: pd.DataFrame):
enc = OneHotEncoder()
cleaned_dataset = dataset.replace({
'yes': 1,
'no': 0,
'success': 1,
'failure': 0,
'unknown': np.nan,
'other': np.nan,
})
transformed = enc.fit_transform(cleaned_dataset)
print(transformed)
return transformed
def build_pipeline(self):
"""
Makes a pipeline based on data_config
This is because autosklearn does not perform automatic data encoding
"""
categorical_list = infer_categoricals(self.X)
preprocessing_steps = []
if self.data_config.get("text_columns"):
print("Applying TFIDF to text columns: {data_config.get('text_columns')}")
preprocessing_steps.append(make_pipeline(
ColumnSelector(cols=data_config.get("text_columns"), drop_axis=True),
TfidfVectorizer()
))
categorical_list = [c for c in categorical_list if c not in data_config["text_columns"]]
if categorical_list:
print(f"Applying One Hot Encoding to categorical columns: {categorical_list}")
preprocessing_steps.append(make_pipeline(
ColumnSelector(cols=categorical_list),
OneHotEncoder(handle_unknown="impute")
))
if preprocessing_steps:
preprocessing_steps = make_union(*preprocessing_steps)
preprocessing_steps = make_pipeline(preprocessing_steps, SimpleImputer())
else:
preprocessing_steps = SimpleImputer()
if self.problem_type == "classification":
automl = TPOTClassifier(**self.automl_settings)
else:
automl = TPOTRegressor(**self.automl_settings)
automl_pipeline = make_pipeline(
preprocessing_steps,
automl
)
return automl_pipeline
def onehot_or_targ(X, y, categorical, k):
''' Returns the X, y with encoded categorical variables based on a threshold
value k.
Parameters:
-----------
X: pd.DataFrame
Contains the dataframe of a given dataset excluding its target column.
y: pd.Series
Contains the series of the target of a given dataset.
categorical: list
Contains the names of the categorical columns.
k: int
Contains threshold value to determine whether to perform target encoding
or one-hot encoding.
Returns:
--------
pd.DataFrame, pd.Series
Contains an updated pd.DataFrame with encoding of categorical features,
contains an updated pd.Series with encoding of a categorical target.
'''
for column in categorical:
if len(X[column].unique()) > k:
if X[column].dtype.name == 'category':
X[column] = X[column].cat.codes
if y.dtype.name == 'category':
y = y.cat.codes
X = TargetEncoder(cols=[column]).fit_transform(X, y)
else:
X = OneHotEncoder(cols=[column]).fit_transform(X)
return X, y
def one_hot_encode(self):
one_hot_cols = [
'events', 'zone', 'pitch_type', 'type', 'home_team', 'away_team',
'pitch_count', 'L1_pitch_type', 'L1_pitch_result', 'L1_pitch_zone',
'_count', 'count_cat', 'pitch_cat', 'balls', 'strikes','inning',
'outs_when_up', 'batting_order_slot'
]
# Instantiate Encoder
one_hot_encoder = OneHotEncoder(cols=one_hot_cols,
return_df=True,
use_cat_names=True)
# Encode features
encoded = one_hot_encoder.fit_transform(self.df[one_hot_cols],
self.df['next_pitch'])
# Join encoded features into df and drop old columns
self.df = self.df.join(encoded).drop(columns = one_hot_cols + ['events_0'])
def create_regression_pipeline(X, y):
X_train, X_test, y_train, y_test = train_test_split(X, y, train_size=0.7)
numerical_indexes = np.array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
non_numerical_indexes = np.array([], int)
one_hot_indexes_after_handle_missing_values = np.array([], int)
ordinal_indexes_after_handle_missing_values = np.array([], int)
pipeline = Pipeline(steps=[
(
"handle_missing_values",
ColumnTransformer(
[
("imputer_mean", SimpleImputer(strategy="mean"),
numerical_indexes),
(
"imputer_mode",
SimpleImputer(strategy="most_frequent"),
non_numerical_indexes,
),
],
remainder="drop",
),
),
(
"handle categorical features",
ColumnTransformer(
[
(
"feature_encoder_ordinal",
OrdinalEncoder(),
ordinal_indexes_after_handle_missing_values,
),
(
"feature_encoder_onehot",
OneHotEncoder(),
one_hot_indexes_after_handle_missing_values,
),
],
remainder="passthrough",
),
),
("estimator", LinearRegression(fit_intercept=True)),
])
pipeline.fit(X_train, y_train)
y_pred = pipeline.predict(X_test)
return {
'features_train': X_train,
'features_test': X_test,
'target_train': y_train,
'target_test': y_test,
'target_predicted': y_pred,
'regression_pipeline': pipeline
}
def _perform_categ_fit(self, df, y):
# https://github.com/scikit-learn-contrib/categorical-encoding
# https://tech.yandex.com/catboost/doc/dg/concepts/algorithm-main-stages_cat-to-numberic-docpage/
# https://en.wikipedia.org/wiki/Feature_hashing#Feature_vectorization_using_the_hashing_trick
categ_cols = {}
onehot_cols = []
for col in self.categorical_vars:
categs = df[col].astype(
pd.api.types.CategoricalDtype()).cat.categories
if self.categ_enc_method == "onehot":
card = df[col].nunique()
if card > 10:
print("Warning, cardinality of {} = {}".format(col, card))
onehot_cols.append(col)
elif self.categ_enc_method == "target":
if self.tfs_list["y"] is None:
raise Exception(
"You have to pass your target variable to the fit() "
"function for target encoding")
# Mean/target/likelihood encoding
target_col_name = self.tfs_list["y"].name
df_enc = df.copy()
df_enc[target_col_name] = self.tfs_list["y"]
cumsum = df_enc.groupby(
col)[target_col_name].cumsum() - df_enc[target_col_name]
cumcnt = df_enc.groupby(col)[target_col_name].cumcount()
means = cumsum / cumcnt
means.rename('mean_enc', inplace=True)
mean_enc = pd.Series(means, index=self.tfs_list["y"]).to_dict()
global_mean = self.tfs_list["y"].mean()
categ_cols[col] = {"target": (global_mean, mean_enc)}
elif self.categ_enc_method == "hashing":
str_hashs = [col + "=" + str(val) for val in categs]
hashs = [hash(h) % self.hash_space for h in str_hashs]
categ_cols[col] = {"hashing": hashs}
if len(onehot_cols) > 0:
enc = CategOneHot(cols=onehot_cols, handle_unknown='impute')
enc.fit(df)
self.tfs_list["onehot"] = enc
self.tfs_list["categ_cols"] = categ_cols
def one_hot_encoder(self, df, configger):
"""
:param df: the train dataset.
:param configger: the json str of configger setting, the params means:
verbose: int
integer indicating verbosity of the output. 0 for none.
cols: list
a list of columns to encode, if None, all string columns will be encoded.
drop_invariant: bool
boolean for whether or not to drop columns with 0 variance.
return_df: bool
boolean for whether to return a pandas DataFrame from transform (otherwise it will be a numpy array).
use_cat_names: bool
if True, category values will be included in the encoded column names. Since this can result in duplicate column names, duplicates are suffixed with '#' symbol until a unique name is generated.
If False, category indices will be used instead of the category values.
handle_unknown: str
options are 'error', 'return_nan', 'value', and 'indicator'. The default is 'value'. Warning: if indicator is used,
an extra column will be added in if the transform matrix has unknown categories. This can cause
unexpected changes in dimension in some cases.
handle_missing: str
options are 'error', 'return_nan', 'value', and 'indicator'. The default is 'value'. Warning: if indicator is used,
an extra column will be added in if the transform matrix has nan values. This can cause
unexpected changes in dimension in some cases.
:return: the transform result
"""
X, y, encode_col = self.get_Xy(df, configger)
drop_invariant = set_default_vale("drop_invariant", configger, False, is_bool=True)
handle_missing = set_default_vale("handle_missing", configger, "value")
handle_unknown = set_default_vale("handle_unknown", configger, "value")
use_cat_names = set_default_vale("use_cat_names", configger, False, is_bool=True)
encoder = OneHotEncoder(verbose=1, cols=encode_col, drop_invariant=drop_invariant, return_df=True,
use_cat_names=use_cat_names,
handle_unknown=handle_unknown, handle_missing=handle_missing)
res = encoder.fit_transform(X, y)
return res
def get_single_encoder(encoder_name: str, cat_cols: list):
"""
Get encoder by its name
:param encoder_name: Name of desired encoder
:param cat_cols: Cat columns for encoding
:return: Categorical encoder
"""
if encoder_name == "FrequencyEncoder":
encoder = FrequencyEncoder(cols=cat_cols)
if encoder_name == "WOEEncoder":
encoder = WOEEncoder(cols=cat_cols)
if encoder_name == "TargetEncoder":
encoder = TargetEncoder(cols=cat_cols)
if encoder_name == "SumEncoder":
encoder = SumEncoder(cols=cat_cols)
if encoder_name == "MEstimateEncoder":
encoder = MEstimateEncoder(cols=cat_cols)
if encoder_name == "LeaveOneOutEncoder":
encoder = LeaveOneOutEncoder(cols=cat_cols)
if encoder_name == "HelmertEncoder":
encoder = HelmertEncoder(cols=cat_cols)
if encoder_name == "BackwardDifferenceEncoder":
encoder = BackwardDifferenceEncoder(cols=cat_cols)
if encoder_name == "JamesSteinEncoder":
encoder = JamesSteinEncoder(cols=cat_cols)
if encoder_name == "OrdinalEncoder":
encoder = OrdinalEncoder(cols=cat_cols)
if encoder_name == "CatBoostEncoder":
encoder = CatBoostEncoder(cols=cat_cols)
if encoder_name == "MEstimateEncoder":
encoder = MEstimateEncoder(cols=cat_cols)
if encoder_name == "OneHotEncoder":
encoder = OneHotEncoder(cols=cat_cols)
if encoder is None:
raise NotImplementedError("To be implemented")
return encoder
def get_single_encoder(encoder_name: str, cat_cols: list):
if encoder_name == "FrequencyEncoder":
encoder = FrequencyEncoder(cols=cat_cols)
if encoder_name == "WOEEncoder":
encoder = WOEEncoder(cols=cat_cols)
if encoder_name == "TargetEncoder":
encoder = TargetEncoder(cols=cat_cols)
if encoder_name == "SumEncoder":
encoder = SumEncoder(cols=cat_cols)
if encoder_name == "MEstimateEncoder":
encoder = MEstimateEncoder(cols=cat_cols)
if encoder_name == "LeaveOneOutEncoder":
encoder = LeaveOneOutEncoder(cols=cat_cols)
if encoder_name == "HelmertEncoder":
encoder = HelmertEncoder(cols=cat_cols)
if encoder_name == "BackwardDifferenceEncoder":
encoder = BackwardDifferenceEncoder(cols=cat_cols)
if encoder_name == "JamesSteinEncoder":
encoder = JamesSteinEncoder(cols=cat_cols)
if encoder_name == "OrdinalEncoder":
encoder = OrdinalEncoder(cols=cat_cols)
if encoder_name == "CatBoostEncoder":
encoder = CatBoostEncoder(cols=cat_cols)
if encoder_name == "MEstimateEncoder":
encoder = MEstimateEncoder(cols=cat_cols)
if encoder_name == 'OneHotEncoder':
encoder = OneHotEncoder(cols=cat_cols)
# assert encoder is not None
return encoder
def read_data(self,
data_path,
y_col,
index_col=None,
skip_cols=None,
test_size=0.3):
"""
Read a csv file with data.
Categorical variables will be encoded according to the one hot
scheme.
Parameters
----------
data_path : str
Path to the csv file with data.
y_col : str
Ground truth labels with values of 0 and 1.
index_col : int, sequence or bool, optional
Column to use as the row labels of the DataFrame. If a sequence is
given, MultiIndex is used.
skip_cols : list
List of features / columns to exclude from the data.
test_size : float
Should be between 0.0 and 1.0 and represent the proportion of the
dataset to include in the test split.
Returns
-------
data_splits : list, length = 4
List containing train-test split.
"""
data = pd.read_csv(data_path,
index_col=index_col,
na_values=['NONE', 'na'])
# drop columns with where N/As constitute around 10% of all entries
na_max_percent = 0.1
nas = data.isna().sum()
excessive_na_cols = set(nas[nas > na_max_percent * len(data)].index)
excessive_na_cols = excessive_na_cols.union(set(skip_cols))
data_cols = set(data.columns).difference(excessive_na_cols)
if y_col not in data_cols:
raise ValueError(f'Too many enties without the labels {y_col}')
numeric_cols = set(
data._get_numeric_data().columns).difference(excessive_na_cols)
# since y_col contains 0, 1 it should be numeric
categorical_cols = data_cols - numeric_cols
numeric_cols.remove(y_col)
data = data.loc[:, data_cols]
data = data.dropna()
X = data.loc[:, numeric_cols.union(categorical_cols)]
y = data.is_bad.values
# encode categorical variables
encoder = OneHotEncoder(cols=categorical_cols, use_cat_names=True)
X = encoder.fit_transform(X)
data_splits = train_test_split(X,
y,
test_size=test_size,
random_state=self._random_state)
return data_splits
def eoa_fit(self, X, y, **kwargs):
"""
Applies evolutionary optimization methods to find an optimum pipeline
:param X: Training data
:param y: Corresponding observations
:param kwargs: `EOA` parameters
:return: `self`
"""
from .structsearch import BoxSample, CompactSample
from .eoa import EOA
_X, _y = X, y
if self.cat_cols is not None:
from category_encoders.one_hot import OneHotEncoder
enc = OneHotEncoder(cols=self.cat_cols, return_df=False, handle_unknown='ignore')
enc.fit(X)
_X = enc.transform(X)
X_, y_ = _X, _y
self.num_features = len(X_[0])
Pop = []
for l in range(1, self.length + 1):
candidates = self.words.Generate(l)
for cnddt in candidates:
if self._validate_sequence(cnddt):
Pop.append(cnddt)
def _eval(ppl):
if self.couldBfirst == []:
from sklearn.pipeline import Pipeline
else:
from imblearn.pipeline import Pipeline
from sklearn.model_selection import RandomizedSearchCV
if self.surrogates is None:
from numpy import logspace
from sklearn.gaussian_process import GaussianProcessRegressor
from sklearn.kernel_ridge import KernelRidge
from sklearn.gaussian_process.kernels import Matern, Sum, ExpSineSquared, WhiteKernel
param_grid_gpr = {"alpha": logspace(-8, 1, 20),
"kernel": [Sum(Matern(length_scale=l_, nu=p), WhiteKernel(noise_level=q))
for l_ in logspace(-3, 3, 20)
for p in [0.5, 1.5, 2.5]
for q in logspace(-3, 1.5, 20)]}
GPR = RandomizedSearchCV(GaussianProcessRegressor(), param_distributions=param_grid_gpr, n_iter=20,
cv=2)
param_grid_krr = {"alpha": logspace(-4, 0, 10),
"kernel": [Sum(Matern(), ExpSineSquared(l_, p))
for l_ in logspace(-2, 2, 20)
for p in logspace(0, 2, 20)]}
KRR = RandomizedSearchCV(KernelRidge(), param_distributions=param_grid_krr, n_iter=30, cv=2)
self.surrogates = [(KRR, 35, CompactSample, 'L-BFGS-B'), (GPR, 50, BoxSample, 'L-BFGS-B')]
self.min_random_evals = 10
from collections import OrderedDict
fitted = OrderedDict([])
for seq in ppl:
best_mdl, best_scr = self.optimize_pipeline(seq, X_, y_)
if seq not in self.models:
self.models[seq] = (best_mdl, best_scr)
if self.verbose > 0:
print("score:%f" % best_scr)
print(best_mdl)
fitted[seq] = -best_scr
return fitted
num_parents = kwargs.pop('num_parents', 30)
mutation_prob = kwargs.pop('mutation_prob', .1)
_eoa = EOA(population=Pop, fitness=_eval, num_parents=num_parents, mutation_prob=mutation_prob,
term_genes=self.couldBlast, init_genes=self.couldBfirst, **kwargs)
_eoa()
self.best_estimator_ = list(self.get_top(1).items())[0][1][0]
return self
X_test = transform_types_X(X_test)
y_train, y_test = load_obj("y_train"), load_obj("y_test")
encoder = load_obj("label_encoder")
print("CHANGING COLUMN NAMES")
X_train.columns = [
"".join(c if c.isalnum() else "_" for c in str(x))
for x in X_train.columns
]
X_test.columns = [
"".join(c if c.isalnum() else "_" for c in str(x))
for x in X_test.columns
]
if args.encoder == "CatBoost":
cat_encoder = CatBoostEncoder()
elif args.encoder == "OneHot":
cat_encoder = OneHotEncoder()
print("HACIENDO CATEGORICAL ENCODER")
X_train = cat_encoder.fit_transform(X_train, y_train)
X_test = cat_encoder.transform(X_test)
print("FITTING STACKING")
stacking.fit(X_train, y_train)
save_obj(stacking, f"{args.name}")
X_test, y_test = RandomUnderSampler(sampling_strategy={
5: int(0.11 * 13526)
}).fit_resample(X_test, y_test)
preds = stacking.predict(X_test)
save_obj(preds, f"{args.name}_preds")
print(
f"F1 SCORE {f1_score(y_test, preds , average='macro')}, F2 SCORE {fbeta_score(y_test, preds, average='macro', beta=2)},F05 SCORE {fbeta_score(y_test, preds, average='macro', beta=0.5)}, PRECISION IS {precision_score(y_test, preds, average='macro')},RECALL IS {recall_score(y_test, preds, average='macro')}, ACCURACY IS {accuracy_score(y_test, preds)}"
)
cm = confusion_matrix(y_test, preds, normalize="true")
def fit(self, X: X_TYPES, y: Y_TYPES):
"""Fit to data.
Parameters
----------
X: dict, list, tuple, np.ndarray or pd.DataFrame
Feature set with shape=(n_samples, n_features).
y: int, str or sequence
- If int: Index of the target column in X.
- If str: Name of the target column in X.
- Else: Target column with shape=(n_samples,).
Returns
-------
self: Encoder
"""
X, y = self._prepare_input(X, y)
self._cat_cols = X.select_dtypes(exclude="number")
# Check Parameters
if self.strategy.lower().endswith("encoder"):
self.strategy = self.strategy[:-7] # Remove the Encoder at the end
if self.strategy.lower() not in ENCODING_STRATS:
raise ValueError(
f"Invalid value for the strategy parameter, got {self.strategy}. "
f"Choose from: {', '.join(ENCODING_STRATS)}."
)
strategy = ENCODING_STRATS[self.strategy.lower()]
if self.max_onehot is None:
self.max_onehot = 0
elif self.max_onehot < 0: # if 0, 1 or 2: it never uses one-hot encoding
raise ValueError(
"Invalid value for the max_onehot parameter."
f"Value should be >= 0, got {self.max_onehot}."
)
if self.frac_to_other:
if self.frac_to_other <= 0 or self.frac_to_other >= 1:
raise ValueError(
"Invalid value for the frac_to_other parameter. Value "
f"should be between 0 and 1, got {self.frac_to_other}."
)
self.log("Fitting Encoder...", 1)
for col in X:
self._to_other[col] = []
if col in self._cat_cols:
# Group uncommon classes into "other"
if self.frac_to_other:
for category, count in X[col].value_counts().items():
if count < self.frac_to_other * len(X[col]):
self._to_other[col].append(category)
X[col] = X[col].replace(category, "other")
# Count number of unique values in the column
n_unique = len(X[col].unique())
# Perform encoding type dependent on number of unique values
if n_unique == 2:
self._encoders[col] = OrdinalEncoder(
dtype=np.int8,
handle_unknown="error",
).fit(X[col].values.reshape(-1, 1))
elif 2 < n_unique <= self.max_onehot:
self._encoders[col] = OneHotEncoder(
handle_missing="error",
handle_unknown="error",
use_cat_names=True,
).fit(pd.DataFrame(X[col]))
else:
self._encoders[col] = strategy(
handle_missing="error",
handle_unknown="error",
**self.kwargs,
).fit(pd.DataFrame(X[col]), y)
self._is_fitted = True
return self
X_train, X_test = df[train_index], df[test_index]
y_train, y_test = df[train_index], df[test_index]
train = df.loc[:, df.columns != 'DEMAND']
test = df['DEMAND']
# Scale Data
encoder = SumEncoder(cols=['FABRICATION'])
encoder = SumEncoder(cols=[
'CHANNEL', 'STYLE', 'COLOR', 'INVENTORY_GROUP', 'GENDER_CATEGORY_DESC',
'FABRICATION', 'SILHOUETTE'
])
encoder = OneHotEncoder(cols=['FABRICATION'])
encoder = OneHotEncoder(cols=[
'CHANNEL', 'STYLE', 'COLOR', 'INVENTORY_GROUP', 'GENDER_CATEGORY_DESC',
'FABRICATION'
])
train = encoder.fit_transform(train)
train = train.drop(['intercept'], axis=1)
test = test.values
test = test.reshape(-1, 1)
scaler = StandardScaler()
scaler.fit(test)
test = scaler.transform(test)
def _generate_features(self,
X,
y=None,
numeric_extra=None,
categorical_extra=None):
try:
self.feature_pipeline_
except AttributeError:
n_days = X['dayofweek'].nunique()
n_hours = X['hour'].nunique()
self.feature_pipeline_ = Pipeline([(
'features',
FeatureUnion([
# time of week part of TOWT
('weeks',
Pipeline([
('split',
FeatureUnion([
('days',
Pipeline([
('select', ColumnSelector('dayofweek')),
('ordinal',
OrdinalEncoder(cols=['dayofweek'],
return_df=False)),
('unknown',
SimpleImputer(missing_values=-1,
strategy='most_frequent'))
])),
('hours',
Pipeline([('select', ColumnSelector('hour')),
('ordinal',
OrdinalEncoder(cols=['hour'],
return_df=False)),
('unknown',
SimpleImputer(
missing_values=-1,
strategy='most_frequent'))]))
])),
('to_pandas',
FunctionTransformer(lambda x: pd.DataFrame(
x, columns=['dayofweek', 'hour']))),
('term',
PatsyTransformer('-1 + C(dayofweek):C(hour)'))
])) if (n_days > 1) and (n_hours > 1) else
('days',
Pipeline([
('select', ColumnSelector('dayofweek')),
('ordinal',
OrdinalEncoder(cols=['dayofweek'], return_df=False)),
('unknown',
SimpleImputer(missing_values=-1,
strategy='most_frequent')),
('to_pandas',
FunctionTransformer(lambda x: pd.DataFrame(
x, columns=['dayofweek']))),
('one_hot',
OneHotEncoder(cols=['dayofweek'], return_df=False))
])) if n_days > 1 else
('hours',
Pipeline(
[('select', ColumnSelector('hour')),
('ordinal',
OrdinalEncoder(cols=['hour'], return_df=False)),
('unknown',
SimpleImputer(missing_values=-1,
strategy='most_frequent')),
('to_pandas',
FunctionTransformer(
lambda x: pd.DataFrame(x, columns=['hour']))),
('one_hot',
OneHotEncoder(cols=['hour'], return_df=False))])),
# temperature part of TOWT
('temperature',
ColumnTransformer([
('encode_temperature',
IntervalEncoder(
n_chunks=10,
span=0.1 * X[self.temperature_col].std(),
method='normal'), [self.temperature_col])
])),
('temperature_interact',
'drop' if n_hours == 1 else Pipeline(
[('split',
FeatureUnion([
('temperature_part',
Pipeline([
('select',
ColumnSelector(self.temperature_col)),
(
'create_bins',
KBinsDiscretizer(
n_bins=self.n_bins_temperature,
strategy='quantile',
encode='ordinal'),
)
])),
('hour_part',
Pipeline([('select', ColumnSelector('hour')),
('ordinal',
OrdinalEncoder(cols=['hour'],
return_df=False)),
('unknown',
SimpleImputer(
missing_values=-1,
strategy='most_frequent'))]))
])),
('to_pandas',
FunctionTransformer(lambda x: pd.DataFrame(
x, columns=[self.temperature_col, 'hour']))),
('term',
PatsyTransformer(
f'-1 + C({self.temperature_col}):C(hour)'))])),
# deal with extra numerical regressors
('numerical_regressors',
'drop' if not numeric_extra else ColumnTransformer(
[(f'encode_{col}',
IntervalEncoder(n_chunks=4,
span=0.1 * X[col].std(),
method='normal'), [col])
for col in numeric_extra])),
# deal with extra categorical regressors
('categorical_regressors', 'drop' if not categorical_extra
else TargetEncoder(cols=categorical_extra,
return_df=False,
handle_missing='value',
handle_unknown='value'))
]))])
# Fit the pipeline
self.feature_pipeline_.fit(X, y)
finally:
return self.feature_pipeline_.transform(X)
if df[col].dtype == object:
imp = SimpleImputer(strategy='most_frequent')
df[col] = imp.fit_transform(df[[col]])
else:
imp = SimpleImputer(strategy='mean')
df[col] = imp.fit_transform(df[[col]])
## Analysing the Data
# my_report = sweetviz.analyze([df,'Train'], target_feat= 'G3')
# my_report.show_html()
## Scaling and Encoding the data
for colum in df.columns:
if df[colum].dtype == object:
# print(colum , df[colum].unique().tolist())
df[colum] = OneHotEncoder().fit_transform(df[colum])
columns = df.columns
df = MinMaxScaler().fit_transform(df)
df = pd.DataFrame(df, columns=columns)
## Finding the Correlations between Features
# sns.heatmap(df.corr(), fmt = '.1f',annot = True)
# plt.show()
correlations = df.corr()['SalePrice'].drop('SalePrice')
# print(correlations)
# print(correlations.quantile(.25))
# print(correlations.quantile(.75))
# print(correlations.quantile(.50))
def load():
train = pd.read_csv("/kaggle/input/google-quest-challenge/train.csv")
test = pd.read_csv("/kaggle/input/google-quest-challenge/test.csv")
target_cols = [
'question_asker_intent_understanding', 'question_body_critical',
'question_conversational', 'question_expect_short_answer',
'question_fact_seeking', 'question_has_commonly_accepted_answer',
'question_interestingness_others', 'question_interestingness_self',
'question_multi_intent', 'question_not_really_a_question',
'question_opinion_seeking', 'question_type_choice',
'question_type_compare', 'question_type_consequence',
'question_type_definition', 'question_type_entity',
'question_type_instructions', 'question_type_procedure',
'question_type_reason_explanation', 'question_type_spelling',
'question_well_written', 'answer_helpful',
'answer_level_of_information', 'answer_plausible', 'answer_relevance',
'answer_satisfaction', 'answer_type_instructions',
'answer_type_procedure', 'answer_type_reason_explanation',
'answer_well_written'
]
data_cols = ['question_title', 'question_body', 'answer', 'category']
y_train = train[target_cols].copy()
print(type(y_train))
x_train = train[data_cols].copy()
del train
x_test = test.copy()
del test
question_body_doc2vec = MyDoc2Vec()
answer_doc3vec = MyDoc2Vec()
x_train_question_vec = question_body_doc2vec.fit_transform(
x_train['question_body'])
x_test_question_vec = question_body_doc2vec.transform(
x_test['question_body'])
x_train_answer_vec = question_body_doc2vec.fit_transform(x_train['answer'])
x_test_answer_vec = question_body_doc2vec.transform(x_test['answer'])
print(x_train_question_vec.shape)
text_encoder = Pipeline(
[('Text-TF-IDF', TfidfVectorizer(ngram_range=(1, 1))),
('Text-SVD', TruncatedSVD(n_components=100))],
verbose=True)
ohe = OneHotEncoder(cols=['category'])
preprocessor = ColumnTransformer([
('Q-T', text_encoder, 'question_title'),
('Q-B', text_encoder, 'question_body'),
('A', text_encoder, 'answer'),
('Category', ohe, 'category'),
])
x_train = preprocessor.fit_transform(x_train).astype(np.float32)
x_test = preprocessor.transform(x_test).astype(np.float32)
y_train = y_train.values.astype(np.float32)
x_train = np.concatenate(
[x_train, x_train_question_vec, x_train_answer_vec], axis=1)
x_test = np.concatenate([x_test, x_test_question_vec, x_test_answer_vec],
axis=1)
return x_train, y_train, x_test
def create_classification_pipeline(X, y):
X_train, X_test, y_train, y_test = train_test_split(X, y, train_size=0.7)
numerical_indexes = np.array([0, 1, 2, 3])
non_numerical_indexes = np.array([], int)
ordinal_indexes_after_handle_missing_values = np.array([], int)
one_hot_indexes_after_handle_missing_values = np.array([], int)
pipeline = Pipeline(steps=[
(
"handle_missing_values",
ColumnTransformer(
[
("imputer_mean", SimpleImputer(strategy="mean"),
numerical_indexes),
(
"imputer_mode",
SimpleImputer(strategy="most_frequent"),
non_numerical_indexes,
),
],
remainder="drop",
),
),
(
"handle_categorical_features",
ColumnTransformer(
[
(
"feature_encoder_ordinal",
OrdinalEncoder(),
ordinal_indexes_after_handle_missing_values,
),
(
"feature_encoder_onehot",
OneHotEncoder(),
one_hot_indexes_after_handle_missing_values,
),
],
remainder="passthrough",
),
),
(
"estimator",
LogisticRegression(
solver="liblinear",
penalty="l2",
C=1.0,
fit_intercept=True,
class_weight=None,
max_iter=100,
multi_class="auto",
),
),
])
_ = pipeline.fit(X_train, y_train)
y_pred = pipeline.predict(X_test)
y_prob = pipeline.predict_proba(X_test)
return {
'features_train': X_train,
'features_test': X_test,
'target_train': y_train,
'target_test': y_test,
'target_predicted': y_pred,
'target_probability': y_prob,
'classification_pipeline': pipeline
}
def enc(X):
e = CEOneHotEncoder(use_cat_names=True, handle_unknown='ignore').fit(X)
return e.transform(X)
text_encoder = Pipeline(
[('Text-TF-IDF', TfidfVectorizer(ngram_range=(1, 3))),
('Text-SVD', TruncatedSVD(n_components=100))],
verbose=True)
#Encode 'url'
# gives part of string (URL) before '.'
before_dot = re.compile('^[^.]*')
def transform_url(x):
return x.apply(lambda v: re.findall(before_dot, urlparse(v).netloc)[0])
url_encoder = Pipeline(
[('URL-transformer', FunctionTransformer(transform_url,
validate=False)),
('URL-OHE', OneHotEncoder(drop_invariant=True))],
verbose=True)
#Encode 'category'
ohe = OneHotEncoder(cols='category', drop_invariant=True)
#Transform
preprocessor = ColumnTransformer([('Q-T', text_encoder, 'question_title'),
('Q-B', text_encoder, 'question_body'),
('A', text_encoder, 'answer'),
('URL', url_encoder, 'url'),
('Categoty', ohe, 'category')],
verbose=True)
x_train = preprocessor.fit_transform(x_train)
x_test = preprocessor.transform(x_test)
print(x_train.shape)