Python rewrite of the Urb/Homemaker stack
Bruno Postle
2ef2b15fe3
oracle.score_batch() writes/cleans N outputs and runs urb-fitness.pl once with all file names; oracle.score() is now a thin wrapper. Adds Score.fail_lines (sorted) because Perl hash-order randomisation shuffles .fails line order between runs, and documents Urb's ~1-ULP score nondeterminism (compare with rel tolerance, never ==). experiments/bench_batch_oracle.py validates batch-vs-single parity on the 35-file corpus and benchmarks: 0.98 s/dom batched vs 1.27 s/dom single (x1.30), all files identical (fitness to 1e-12 rel, exact failure sets). Closes homemaker-py-av5. |
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|---|---|---|
| .beads | ||
| .claude | ||
| experiments | ||
| src/homemaker | ||
| .gitignore | ||
| AGENTS.md | ||
| CLAUDE.md | ||
| DESIGN.md | ||
| pyproject.toml | ||
| README.md | ||
homemaker-py
Programme-driven building-layout search over slicing trees. A clean-room Python successor to the Perl Urb project, intended to eventually be 100% Python.
Why a rewrite
Urb represents a building as a binary slicing tree where room sizes are derived top-down from division ratios. That makes room area an emergent property of every cut above it, which:
- gives the genome low locality (a cut near the root rescales every descendant),
- makes target room sizes nearly impossible to hit, so the gaussian size penalty dominates fitness, and
- defeats crossover (transplanted subtrees lose their proportions).
homemaker inverts this: leaves carry target dimensions from the programme and division ratios are solved bottom-up for a fixed topology. The evolutionary search then only explores topology + types + adjacency.
Phase plan
- Solver experiment (current): port Urb's geometry, re-solve ratios from programme targets, score the result against the original via the Perl oracle.
- Native Python fitness (retire the Perl oracle).
- Canonical slicing encoding (normalized Polish expression) + memetic search.
Layout
src/homemaker/dom.py— read/write Urb.domYAML into aNodetree.src/homemaker/geometry.py— faithful port of Urb's top-down geometry.src/homemaker/programme.py— parsepatterns.configspace requirements.src/homemaker/solver.py— bottom-up ratio solve (scipy).src/homemaker/oracle.py— Phase-1 scaffold: score a.domvia Urb'surb-fitness.pl.
The Perl oracle is the only throwaway component; everything else is permanent.