paulin/EasyGA
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Cleaner comments

Browse Source
This commit is contained in:
SimpleArt
2020-12-02 18:55:25 -05:00
parent 23efae27dc
commit 4386f2c959
1 changed files with 7 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/parent_selection/parent_selection_methods.py
View File

@ -204,16 +204,15 @@ class Parent_Selection:
in range(len(ga.population))
]
sum_weights = sum(weights)
offset = sum(weights) * (1 - ga.selection_probability)
# Rescale and adjust using selection_probability
# so that
# if selection_probability is high,
# parents are more likely selected based on fitness.
# if selection_probability is low,
# parents are more likely selected based on randomness.
# Rescale and adjust using selection_probability so that
# if selection_probability is high, a low offset is used,
# making selection mostly based on fitness.
# if selection_probability is low, a high offset is used,
# inflating the weights so that everyone has a more equal chance.
weights = [
weight / sum_weights - ga.selection_probability + 1
weight + offset
for weight
in weights
]