medium · flats · 2 storeys
B0007: a courtyard on a 21.7 × 21.6 m lot
4 dwellings, 23 rooms. The pooled front across all methods holds 361 nondominated designs.
Requirements
- Lot
- 21.7 × 21.6 m (469 m²)
- Street side faces
- 180° (0 = north)
- Setbacks front / rear / left / right
- 3.4 / 4.3 / 1.4 / 1.7 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 25% of the lot
- Parking spaces
- 0
- Courtyard
- 42 m² requested
- Tightness (programme / buildable volume)
- 0.571
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U1 | 2BR | 0 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
| U2 | 2BR | 1 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
| U3 | 2BR | 1 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
Required contacts: entry–living, kitchen–living. Doors forbidden between: entry–bedroom_primary, entry–bedroom_secondary, kitchen–bathroom.
Results by method
| Method | Solved | HV | Evals | s | Notes |
|---|---|---|---|---|---|
| Heuristic | 100% | 0.077 | 587 | 2.8 | |
| Random search | 0% | 0.000 | 1500 | 5.1 | |
| Simulated annealing | 33% | 0.015 | 1500 | 5.3 | |
| NSGA-II | 67% | 0.047 | 1500 | 6.7 | |
| CP-SAT | 0% | 0.000 | 0 | 4.6 | solver timeout |
| Random sketch + repair | 33% | 0.014 | 1500 | 5.7 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.090 | 1500 | 8.8 |
Mean over 1 seeds (the heuristic is deterministic: one run).
Representative designs from the pooled front
Each is best on one objective, or the knee: the most balanced trade-off. None is best overall.
Closest attempts that failed
For methods that found nothing feasible: their least-infeasible design, with its violations marked on its page.
Pareto explorer
Loading designs…
Convergence on this brief
Archive hypervolume against evaluations, mean over seeds.
What stopped designs here
| method | C04 | C05 | C06 | C07 | C08 | C09 | C10 | C11 | C14 |
|---|---|---|---|---|---|---|---|---|---|
| Heuristic | 12% | 37% | 30% | – | – | 1% | 13% | 1% | 1% |
| Random search | 99% | 100% | 100% | 100% | 48% | 97% | 60% | 98% | 1% |
| Simulated annealing | 67% | 89% | 86% | 68% | 8% | 73% | 24% | 81% | 0% |
| NSGA-II | 40% | 68% | 50% | 37% | 6% | 61% | 12% | 47% | 1% |
| Random sketch + repair | 43% | 60% | 57% | 42% | 8% | 63% | 30% | 53% | 49% |
| Heuristic-seeded NSGA-II | 27% | 42% | 29% | 2% | 6% | 11% | 18% | 23% | 4% |