When I can split my dataset into training and validation set before PCA or after PCA?
Question
I want to split my dataset to training and validation sets I don't know whether I should split the dataset before applying pca dimensionality reduction or after pca to avoid leakage of data.
Any help would be appreciated.
1 answers
solution1
1 2020-07-02 16:58:48
The dataset should split before applying PCA to avoid leakage of data
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