/Python/How to feature selection in python

How to feature selection in python

Feature selection python

from sklearn.feature_selection import VarianceThreshold
sel = VarianceThreshold(threshold=(.05))
X = sel.fit_transform(X)

How to feature selection in python

>>> from sklearn.datasets import load_iris
>>> from sklearn.feature_selection import SelectKBest
>>> from sklearn.feature_selection import chi2
>>> X, y = load_iris(return_X_y=True)
>>> X.shape
(150, 4)
>>> X_new = SelectKBest(chi2, k=2).fit_transform(X, y)
>>> X_new.shape
(150, 2)

Similar codes

2 votes153 views1 answer
Save file python tkinter
Python
1 vote151 views1 answer
How to make multiple place holders in a string with %s python
Python
0 vote141 views1 answer
Create_user() missing 1 required positional argument: 'username'
Python
1 vote132 views1 answer
Python timestamp shift one day
Python
0 vote192 views1 answer
Import pil pycharm
Python
3 votes128 views1 answer
Images from opencv displayed in blue
Python
5 votes170 views3 answers
Get input from user in python
Python
7 votes196 views4 answers
Print multiple lines python
Python
0 vote163 views1 answer
Split string by special characters python
Python
0 vote153 views1 answer
Flask echo server
Python