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Add Diversity Metric #151

Open EdGarrity opened 2 years ago

EdGarrity commented 2 years ago

Add measure of diversity as defined in "Lexicase selection for program synthesis: a diversity analysis" by Thomas Helmuth, Nicholas Freitag McPhee, Lee Spector (2015-GPTP-lexicase-diversity-analysis.pdf)

EdGarrity commented 2 years ago

elitized[i,t] = if error[i,t] = min(error[j,t]) then 0 else 1