easy · flats · 2 storeys
B0000: a adu pair on a 16.5 × 19.9 m lot
2 dwellings, 11 rooms. The pooled front across all methods holds 318 nondominated designs.
Requirements
- Lot
- 16.5 × 19.9 m (328 m²)
- Street side faces
- 195° (0 = north)
- Setbacks front / rear / left / right
- 3.6 / 6.9 / 2.4 / 1.5 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 27% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.499
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 2BR | 0 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
| U1 | 1BR | 1 | 46 | entry, living, kitchen, bathroom, bedroom primary |
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% | 0.198 | 300 | 1.7 | |
| Random search | 100% | 0.071 | 1500 | 6.6 | |
| Simulated annealing | 100% | 0.138 | 1500 | 8.3 | |
| NSGA-II | 100% | 0.183 | 1500 | 10.6 | |
| CP-SAT | 100% | 0.164 | 35 | 6.8 | |
| Random sketch + repair | 100% | 0.200 | 1500 | 9.5 | |
| Heuristic-seeded NSGA-II | 67% | 0.043 | 1500 | 7.2 | repair collapse |
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.
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 | 2% | 37% | 37% | – | – | 1% | 0% | 1% |
| Random search | 35% | 90% | 69% | 39% | 16% | 71% | 38% | 84% |
| Simulated annealing | 30% | 60% | 41% | 14% | 8% | 34% | 16% | 36% |
| NSGA-II | 19% | 48% | 37% | 9% | 8% | 29% | 15% | 27% |
| Random sketch + repair | 25% | 47% | 44% | 5% | 6% | 16% | 19% | 32% |
| Heuristic-seeded NSGA-II | 29% | 60% | 71% | 19% | 4% | 22% | 11% | 18% |