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Text Values to Numerical Values for using PCA

joseegaslopezjoseegaslopez Member Posts: 1 Contributor I
edited November 2018 in Help

Hi miners!

I am trying to use PCA component, so it needs only numerical type values, I have a CSV which has kind of 5 or 6 attributes which contain text. I used the following:

Retrieve Data -> Text to Nominal operator  -> Nominal to Numerical -> Replace Missing Values -> PCA

When I try to add the attributes in Text to Nominal the list is empty, so I added the attributes manually with the '+' but when I run it it says that the attributes don't exist in the input data.

Am I missing something?

Answers

  • mschmitzmschmitz Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,128  RM Data Scientist

    Hi,

    are you sure that your attributes are of type text? Just add a breakpoint before Text to Nominal and have a look.

     

    Best,

    Martin

    - Head of Data Science Services at RapidMiner -
    Dortmund, Germany
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