How can I change type of weight in feature selection algorithms?

User: "maryam_raz21"
New Altair Community Member
Updated by Jocelyn

Hi. I'm new in rapidminer and I try feature selection algorithm such as backward eliminatiom and svm-RFE. The problem is that in the result the weight of feature is only 0,1 and it's not useful for me. How can I chang it to real?

Find more posts tagged with

Sort by:
1 - 4 of 41
    User: "kypexin"
    New Altair Community Member

    Hi @maryam_raz21

     

    To get real weights, you should use one of the 'Weight by ...' operators; the feature selection operators you mentioned are acutually only selecting relevant features (hence assigning them weight = 1) and drop irrelevant (hence assigning them weight = 0).

    User: "maryam_raz21"
    New Altair Community Member
    OP

    Thanks for reply:smileyhappy: . I have  another question . This feature selection such as SVM-RFE always selecting relevant or just in rapidminer They behave like this؟ in the papers that I studeid, they used svm-RFE for bioinformatics widely!

    Hi,

     

    have you checked the feature selection extension for this?

     

    Cheers,

    Martin

    User: "maryam_raz21"
    New Altair Community Member
    OP

    yes. I installed feature selection extension 1.1.4 that included svm-rfe, ensemble feature selection and etc. in result all of feature's weight that were selected are 1.:smileyindifferent: