Python 使用熊猫数据框进行主成分分析

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时间:2020-08-19 02:38:11  来源:igfitidea点击:

Principal components analysis using pandas dataframe

pythonpandaspcascientific-computingprincipal-components

提问by user3362813

How can I calculate Principal Components Analysis from data in a pandas dataframe?

如何从熊猫数据框中的数据计算主成分分析?

回答by Akavall

Most sklearnobjects work with pandasdataframes just fine, would something like this work for you?

大多数sklearn对象都可以pandas很好地处理数据,像这样的东西对你有用吗?

import pandas as pd
import numpy as np
from sklearn.decomposition import PCA

df = pd.DataFrame(data=np.random.normal(0, 1, (20, 10)))

pca = PCA(n_components=5)
pca.fit(df)

You can access the components themselves with

您可以访问组件本身

pca.components_