how can i calculate entropy and standard deviation of one numeric feature for each record?

ramzanzadeh72
ramzanzadeh72 New Altair Community Member
edited November 2024 in Community Q&A

hi

i am new in rapidminer and i want to calculate entropy and standard deviation of one feature for each record of example set... i cant find this operator.... how i can do it????

 

 

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Answers

  • sgenzer
    sgenzer
    Altair Employee

    hello @ramzanzadeh72 - welcome to the community. I'm confused with your question. How do you calculate the standard deviation of only one number? If you want to calculate the standard deviation of an entire column/feature, you can do this easily with the Aggregate operator.


    Scott

     

  • ramzanzadeh72
    ramzanzadeh72 New Altair Community Member

    yes, actually i want to calculate entropy and standard deviation of one feature for entire records... standard devation can be calculate by "aggregate operator" but what about entropy???

  • sgenzer
    sgenzer
    Altair Employee

    hmm I have never heard this request before. IFAIK the only way to do this would be to compute the formula with a Generate Macro operator.

     

    Scott

     

  • Thomas_Ott
    Thomas_Ott New Altair Community Member

    @ramzanzadeh72 I assume you are referring to Information theory. So there's a few ways to do it. There's an operator called Discretize by Entropy and there is are some weighting operators using Information Gain. 

  • Thomas_Ott
    Thomas_Ott New Altair Community Member

    Also check out this thread: https://community.rapidminer.com/t5/RapidMiner-Studio-Forum/Information-gain-calculation/td-p/14572

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