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non nominal type to nominal type

vikki499vikki499 Member Posts: 1 Newbie
how to convert non nominal to nominal?


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    varunm1varunm1 Moderator, Member Posts: 1,207 Unicorn
    Hello @vikki499

    Is your non-nominal data "text" or "numerical"? There are operators that change text to nominal, numerical to polynomial. So you can select based on your type of data.


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    jacobcybulskijacobcybulski Member, University Professor Posts: 391 Unicorn
    If your attribute is text, perhaps there is a good reason why it is not nominal, e.g. it may have several thousand possible values. If this is so, I'd first parse the text (e.g. with Process Documents) and create a large collection of term-attributes. If at the end you decide you have too many, you could weight them against the label and select top k based on these weights.

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