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update cal_spawn_numbers_by_fitness

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wls2002
2025-01-30 19:50:26 +08:00
parent 39156059d1
commit 51028346fd
1 changed files with 2 additions and 1 deletions
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src/tensorneat/algorithm/neat/species.py
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@@ -299,7 +299,8 @@ class SpeciesController(StatefulBaseClass):
# normalize the fitness before calculating the spawn number
# consider that the fitness may be negative
# in this way the species with the lowest fitness will have spawn_number = 0
species_fitness = species_fitness - jnp.min(species_fitness)
# 2025.1.31 updated, add +1 to avoid 0
species_fitness = species_fitness - jnp.min(species_fitness) + 1
# calculate the spawn number rate by the fitness of each species
spawn_number_rate = species_fitness / jnp.sum(