easy · flats · 2 storeys
B0037: a courtyard on a 19.7 × 27.7 m lot
5 dwellings, 25 rooms. The pooled front across all methods holds 303 nondominated designs.
Requirements
- Lot
- 19.7 × 27.7 m (546 m²)
- Street side faces
- 30° (0 = north)
- Setbacks front / rear / left / right
- 4.3 / 6.7 / 2.1 / 1.8 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 42% of the lot
- Parking spaces
- 0
- Courtyard
- 48 m² requested
- Tightness (programme / buildable volume)
- 0.575
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | studio | 0 | 33 | entry, living, kitchen, bathroom |
| U1 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U2 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U3 | 1BR | 1 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U4 | 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% | 0.086 | 615 | 3.7 | |
| Random search | 0% | 0.000 | 1500 | 6.7 | |
| Simulated annealing | 0% | 0.000 | 1500 | 6.7 | |
| NSGA-II | 0% | 0.000 | 1500 | 7.5 | |
| CP-SAT | 0% | 0.000 | 0 | 4.6 | solver timeout |
| Random sketch + repair | 0% | 0.000 | 1500 | 7.5 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.086 | 1500 | 10.6 |
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 | 13% | 37% | 8% | 4% | – | – | – | 0% | 3% |
| Random search | 99% | 100% | 100% | 99% | 43% | 98% | 97% | 98% | 4% |
| Simulated annealing | 80% | 99% | 93% | 79% | 19% | 82% | 34% | 85% | 20% |
| NSGA-II | 63% | 95% | 98% | 81% | 11% | 88% | 26% | 83% | 15% |
| Random sketch + repair | 59% | 92% | 71% | 43% | 35% | 62% | 72% | 69% | 98% |
| Heuristic-seeded NSGA-II | 23% | 52% | 29% | 9% | 5% | 15% | 14% | 25% | 3% |