Table 2: Summary of symbolic regression experimental results.

Exper. Ours Comparison Number Length Fitness Length Fitness 254 99.984% 266 99.496% 87 99.983% 282 99.907% 155 99.735% 470 96.187% 62 99.987% 185 99.966% 55 99.179% 186 98.936%

1: Compared to PGEP-O. 2: Compared to canonical distributed GEP.