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

0 vote118 views10 answers
Sqlite3 with flask web application CRUD pdf
Python
1 vote119 views1 answer
Remove single and double quotes from string python
Python
0 vote69 views1 answer
Python3 delete file
Python
0 vote110 views1 answer
Pyhton apend to list
Python
0 vote161 views2 answers
Spark mllib tutorial
Python
9 votes115 views6 answers
How to make a calculator in python
Python
20 votes113 views4 answers
Generate a random number in python between 0 and 1
Python
1 vote109 views1 answer
Webbrowser python could not locate runnable browser
Python
1 vote157 views1 answer
Python count variable and put the count in a column of data frame
Python
6 votes105 views3 answers
Python numphy how to use fractions
Python