Do I need to fit on train data for truncated SVD and then transform the test data on fitted train data?

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Regarding truncated SVD(single value decomposition) do I need to fit on train data and transform the test data on fitted train data? or can I fit on test and transform on test fit?

dimensionality-reduction

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edited Sep 14 '18 at 19:07

Stephen Rauch♦

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asked Sep 14 '18 at 18:25

Harika MHarika M

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