No difference between "polynominal" and "text" data type?

karl_trela
karl_trela New Altair Community Member
edited November 5 in Community Q&A

Hi,

 

I checked the manual and this forum but I cannot find the answer.

 

Is there possibly no difference between the "text" and "polynominal" data types in RM?

 

I am asking, because I worked with quite an large data set and RM seems to save text variables the same way it does with polynominals: as categorical variables (or factors).

The metadata file gets really huge and this slows down RM a lot when loading and handling data.

 

Could this be true?

 

Best

Karl

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Answers

  • Telcontar120
    Telcontar120 New Altair Community Member

    The differences are not visible, but they are important.  On the back-end, there are many text processing operators that only work on data of type "text" and there are many normal operators that work on polynominal data types but not text.  So you do need to make sure that this is set correctly depending on what your downstream needs may be.

  • MartinLiebig
    MartinLiebig
    Altair Employee

    @karl_trela,

    good catch. I think if i remember it correctly it is indeed at the moment the same implementation and the difference is on the usability. But this might change in future.

     

    Best,

    Martin

  • t_liebe
    t_liebe New Altair Community Member

    Hi guys,

     

    I am trying out some text processing models and they worked all for polynominal attributes.

    Now I want to try a new one and need to change the att into a text att. Converting the excel file into a csv didn't work. Can you help me with that ?

     

    Thanks in advance.

  • Telcontar120
    Telcontar120 New Altair Community Member

    "Nominal to Text" operator will convert any attributes that you need.

     

  • t_liebe
    t_liebe New Altair Community Member

    Got it already but thank you anyway !

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