What You Have to Implement

Data I/O

Algorithm.pm: loadSet(), saveOutput()

Fitness

Algorithm.pm: fitnessFunction()

Grammar

Grammar.pm: Functions and Terminals to produce Perl code which defines Individual::evaluateOutput() or other object methods or subroutines. All explained in Section 7.

Functions

Individual.pm: Perhaps you need to define some special functions, like protected division. If your grammar didn't produce a definition for evaluateOutput() then you need to define it here.