"Decision Tree and Feature selection results"

ammargh
ammargh New Altair Community Member
edited November 2024 in Community Q&A
Using RM 5.3.008
Prediction done using Decision tree.
I have used feature selection (Optimize selection) with backward selection. The output of this process was used as an input for X-Validation block. A 90 % accuracy was achieved.
I have found that the feature selection process has removed one feature.
I have replaced the "Optimize selection" block by "select attribute" component and removed that feature. The X-Validation accuracy has dropped down to 89%.

Am I missing something? Shouldn't I get the same accuracy since all other parameters are the same?

Thank you in advanced for your reply

Answers

  • Skirzynski
    Skirzynski New Altair Community Member
    Tried to reproduce what you have described, but I get the same accuracy. Could you post an example process with a small data set?
  • ammargh
    ammargh New Altair Community Member
    I am sorry I could not get permission to provide my data.

    I will try to generate similar data artificially

    Thank you.

Welcome!

It looks like you're new here. Sign in or register to get started.

Welcome!

It looks like you're new here. Sign in or register to get started.