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I have a dataset contains both numerical and non-numerical columns. I want to use PCA, is there any way to handle both?

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    $\begingroup$ PCA is defined for real-valued data, but there are various methods for generalizing it to other data types. Many have been covered on this site. What type of data do you have? $\endgroup$
    – user20160
    Aug 21, 2018 at 16:15
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    $\begingroup$ Perhaps see stats.stackexchange.com/questions/5774/… which may help you. $\endgroup$
    – mdewey
    Aug 21, 2018 at 16:52

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