"feature selection problem"

dkpengqiuyangdkpengqiuyang Member Posts: 21 Contributor I
edited June 2019 in Help


I try the feature selection extension and get a weight file , what shall I do next to use the selection result ?

If I load the weight and use the select attribute by weight operator, what is the difference between "feature selection" and "optimaze by weight"?



  • dkpengqiuyangdkpengqiuyang Member Posts: 21 Contributor I

    and I get a wrong weight I think, they all weight the same, and I am sure that is not ture in real world.

    The progress is like tag below, can you help me to correct my mistake?



    <?xml version="1.0" encoding="GBK"?>
    <attributeweights version="7.4">
        <weight name="1.0" value="1.0"/>
        <weight name="2.0" value="1.0"/>
        <weight name="3.0" value="1.0"/>
        <weight name="4.0" value="1.0"/>
        <weight name="5.0" value="1.0"/>
        <weight name="6.0" value="1.0"/>
        <weight name="7.0" value="1.0"/>
        <weight name="8.0" value="1.0"/>
        <weight name="9.0" value="1.0"/>
        <weight name="10.0" value="1.0"/>
        <weight name="11.0" value="1.0"/>
        <weight name="12.0" value="1.0"/>
        <weight name="13.0" value="1.0"/>
        <weight name="14.0" value="1.0"/>
        <weight name="15.0" value="1.0"/>
        <weight name="16.0" value="1.0"/>
        <weight name="17.0" value="1.0"/>
        <weight name="18.0" value="1.0"/>
        <weight name="19.0" value="1.0"/>
        <weight name="20.0" value="1.0"/>
        <weight name="21.0" value="1.0"/>
        <weight name="22.0" value="1.0"/>
        <weight name="23.0" value="1.0"/>
        <weight name="24.0" value="1.0"/>

    1.png 25.9K
    2.png 15.5K
    3.png 50.9K
  • Thomas_OttThomas_Ott RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 1,761 Unicorn

    You can generate weights for attributes which you can use to, say, help with balancing and sampling a data set AND then you can use Feature Weigths to help understand which attributes affect your label the greatest or least.  Attribute weights don't require a label and Feature weights do require a label.

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