propeller/doc/downsample.md

Downsampling the Training Data

Downsampling is a very simple way to improve the efficiency of your evolutionary runs. It might allow for deeper evolutionary searches and a greater success rate.

Using Downsampled-Lexicase selection with propeller is easy:

Set the :parent-selection argument to :ds-lexicase as follows

lein run -m propeller.problems.simple-regression :parent-selection :ds-lexicase <ARGS>

Arguments:

• Case Downsampling function:
  • Random sampling (default)
  • Case tournament selection

    :ds-function :case-tournament 
    

  • Case Lexicase Selection WIP
• Downsample Rate:

      :downsample-rate 0.1