voting with weight factor

s_ghorbani
s_ghorbani New Altair Community Member
edited November 5 in Community Q&A
Warm hello
I am going to use some algorithms for prediction by voting because of promotion of accuracy absolutely I want to give a weight factor to every operator based on it's accuracy in independent prediction. Please guide me how can I do it.

Best regards
Saeed
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Answers

  • MartinLiebig
    MartinLiebig
    Altair Employee
    do you want to set these weighting factors manually or let them be determined by an algorithm?
    Cheers,
    Martin
  • s_ghorbani
    s_ghorbani New Altair Community Member
    Dear Martin
    So thanks.
    I want to set these factors automatically by algorithms. 
    Cheers
    Seed
  • Papad
    Papad New Altair Community Member
    @mschmitz
    Can you please answer for both situations?
    Thanks in advance.
  • Telcontar120
    Telcontar120 New Altair Community Member
    I'm interested in this as well.  There is an Vote (Ensemble) algorithm that allows you to easily combine predictions from multiple ML operators, but this simply uses majority voting---it does not allow you to weight the combined prediction in any way.  I've already suggested the addition of "weight by confidence" to the Vote operator, which would be helpful at the individual example level, but what you are asking about it is weighting at the overall operator level based on some global measure of performance, presumably.  I don't know of any easy way to accomplish this in RapidMiner (I can imagine how it could be done but very manually using Generate Attributes to create your own weights and then average your predictions by using those weights).