4.3 Survival of the fittest and selection
\(\triangleright \) variable bestFrac
Meaning: Fraction of the current generation that shall be used to produce the next generation.
Default: 0.7
Format:
0.7 : bestFrac
NOTE: This is an important parameter, values between 0.5–0.8 are reasonable.
\(\triangleright \) variable keepBestHM
Meaning: Defines how many best structures will survive into the next generation.
Default: 0.15\(\times \)populationSize
Format:
3 : keepBestHM
\(\triangleright \) variable reoptOld
Meaning: Defines re-relaxation of the survived structures. If reoptOld=0, these structures will be unchanged while if reoptOld=1, they will be re-relaxed again. Usually reoptOld=0 is a reasonable choice (provided your structure relaxation was high quality).
Default: 0
Format:
1 : reoptOld