Random Forest confidence

vijaypshahvijaypshah Member Posts: 30 Guru
edited November 2018 in Help
Could you please let me know what method is used for calculating confidence in Random Forest?

Regards,
Vijay

Answers

  • landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,531 Unicorn
    Hi,
    I think it's either the average confidence of each tree or simply the voting result.

    Greetings,
      Sebastian
  • vijaypshahvijaypshah Member Posts: 30 Guru
    If would be great if you could provide the reference that was used while writing software!
    In description it says, "resulting model is a voting model of all trees."
    Is confidence based on number of votes received?

    Thanks

    Regards,
    Vijay
  • landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,531 Unicorn
    Hi,
    well, use ten trees and take a look at the confidence. If it equals to one of 1, 0.9, ..., 0.1, 0  then it is the voting confidence. Otherwise it will be the average confidence...

    Greetings,
      Sebastian
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