CodeReclaimers / neat-python / 23437908745

87%

Build Type

push

github

Committed by CodeReclaimers

Commit Message

Implement NEAT paper compliance fixes (Items A-K)

Add configurable options to match Stanley & Miikkulainen (2002) while
preserving backward compatibility through defaults that match existing
behavior. Changes include:

- Fix 75% disable rule to replace (not layer on) inherited enabled value
- Match connection genes by innovation number in distance function
- Add separate excess coefficient, node gene flag, enable penalty config
- Add canonical fitness sharing, proportional spawn, interspecies crossover
- Add dynamic compatibility threshold adjustment
- Prune dangling nodes after deletion mutations
- Document complete distance formula and all new parameters

All 552 tests pass (28 new). XOR smoke test verified.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Coverage Stats

88 of 93 new or added lines in 4 files covered. (94.62%)

2 existing lines in 2 files now uncovered.

2087 of 2453 relevant lines covered (85.08%)

0.85 hits per line