medium · flats · 2 storeys
B0008: a duplex on a 17.5 × 22.1 m lot
2 dwellings, 10 rooms. The pooled front across all methods holds 547 nondominated designs.
Requirements
- Lot
- 17.5 × 22.1 m (387 m²)
- Street side faces
- 135° (0 = north)
- Setbacks front / rear / left / right
- 5.8 / 6.7 / 2.4 / 2.4 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 39% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.415
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| 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% | 0.237 | 210 | 0.6 | |
| Random search | 100% | 0.159 | 1500 | 3.0 | |
| Simulated annealing | 100% | 0.230 | 1500 | 5.1 | |
| NSGA-II | 100% | 0.225 | 1500 | 5.4 | |
| CP-SAT | 100% | 0.239 | 46 | 6.7 | |
| Random sketch + repair | 100% | 0.199 | 1500 | 3.7 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.053 | 1500 | 3.2 |
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% | 29% | 36% | – | – | 0% | 1% | 0% |
| Random search | 18% | 83% | 67% | 1% | 11% | 67% | 20% | 81% |
| Simulated annealing | 17% | 50% | 39% | 6% | 6% | 23% | 12% | 28% |
| NSGA-II | 18% | 47% | 33% | 7% | 5% | 30% | 11% | 27% |
| Random sketch + repair | 20% | 44% | 45% | 5% | 6% | 32% | 17% | 30% |
| Heuristic-seeded NSGA-II | 24% | 62% | 48% | 5% | 4% | 25% | 11% | 21% |