medium · flats · 2 storeys
B0006: a adu pair on a 12.8 × 22.2 m lot
2 dwellings, 12 rooms. The pooled front across all methods holds 441 nondominated designs.
Requirements
- Lot
- 12.8 × 22.2 m (284 m²)
- Street side faces
- 195° (0 = north)
- Setbacks front / rear / left / right
- 4.2 / 7.4 / 1.3 / 1.3 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 38% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.584
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 3BR | 0 | 84 | entry, living, dining, kitchen, bathroom, bedroom primary, bedroom secondary, bedroom secondary |
| U1 | studio | 1 | 33 | entry, living, kitchen, bathroom |
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 | 0% | 0.000 | 345 | 0.6 | |
| Random search | 0% | 0.000 | 1500 | 2.6 | |
| Simulated annealing | 67% | 0.074 | 1500 | 2.5 | |
| NSGA-II | 67% | 0.076 | 1500 | 3.3 | |
| CP-SAT | 100% | 0.146 | 47 | 6.8 | |
| Random sketch + repair | 33% | 0.044 | 1500 | 3.7 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.128 | 1500 | 5.0 |
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 |
|---|---|---|---|---|---|---|---|---|
| Heuristic | 8% | 37% | 7% | 5% | – | 1% | 13% | 100% |
| Random search | 95% | 100% | 80% | 99% | 13% | 71% | 73% | 83% |
| Simulated annealing | 62% | 91% | 56% | 63% | 10% | 42% | 41% | 48% |
| NSGA-II | 44% | 77% | 39% | 50% | 10% | 33% | 31% | 56% |
| Random sketch + repair | 62% | 68% | 62% | 20% | 11% | 25% | 58% | 47% |
| Heuristic-seeded NSGA-II | 32% | 49% | 23% | 16% | 2% | 22% | 26% | 25% |