Fig. 2From: Modified differential evolution algorithm with onlooker bee operator for mixed discrete-continuous optimizationPopulation distribution observed at various stages of DE/best/1 and mDEOB/best/1. Note ‘FEs’ denotes the number of the function evaluations a DE: generation = 2, FEs = 60, b DE: generation = 4, FEs = 120, c DE: generation = 8, FEs = 240, d mDEOB: generation = 1, FEs = 60, e mDEOB: generation = 2, FEs = 120, f mDEOB: generation = 4, FEs = 240Back to article page