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bugfix in preprocessing standardize

This commit is contained in:
Alejandro Moreo Fernandez 2024-07-10 16:58:01 +02:00
parent 2034845988
commit b4571d96c7
1 changed files with 8 additions and 3 deletions
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11
quapy/data/preprocessing.py
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@ -90,12 +90,17 @@ def standardize(dataset: Dataset, inplace=False):
:class:`quapy.data.base.Dataset` is to be returned
:return: an instance of :class:`quapy.data.base.Dataset`
"""
s = StandardScaler(copy=not inplace)
training = s.fit_transform(dataset.training.instances)
test = s.transform(dataset.test.instances)
s = StandardScaler()
train, test = dataset.train_test
std_train_X = s.fit_transform(train.X)
std_test_X = s.transform(test.X)
if inplace:
dataset.training.instances = std_train_X
dataset.test.instances = std_test_X
return dataset
else:
training = LabelledCollection(std_train_X, train.labels, classes=train.classes_)
test = LabelledCollection(std_test_X, test.labels, classes=test.classes_)
return Dataset(training, test, dataset.vocabulary, dataset.name)