medium · flats · 2 storeys
B0044: a duplex on a 13.8 × 20.7 m lot
2 dwellings, 10 rooms. The pooled front across all methods holds 283 nondominated designs.
Requirements
- Lot
- 13.8 × 20.7 m (286 m²)
- Street side faces
- 30° (0 = north)
- Setbacks front / rear / left / right
- 6.4 / 6.6 / 1.6 / 1.9 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)
- 0.638
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% | 0.123 | 248 | 0.5 | |
| Random search | 33% | 0.006 | 1500 | 3.0 | |
| Simulated annealing | 100% | 0.116 | 1500 | 3.6 | |
| NSGA-II | 100% | 0.104 | 1500 | 4.1 | |
| CP-SAT | 100% | 0.108 | 48 | 6.8 | |
| Random sketch + repair | 67% | 0.067 | 1500 | 3.7 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.063 | 1500 | 3.6 | 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 | 32% | 63% | 35% | – | – | – | 2% | 1% |
| Random search | 77% | 98% | 67% | 63% | 18% | 74% | 19% | 86% |
| Simulated annealing | 34% | 58% | 29% | 14% | 6% | 28% | 11% | 35% |
| NSGA-II | 29% | 57% | 33% | 11% | 9% | 28% | 11% | 28% |
| Random sketch + repair | 33% | 59% | 52% | 6% | 12% | 59% | 18% | 41% |
| Heuristic-seeded NSGA-II | 45% | 78% | 51% | 13% | 7% | 33% | 11% | 27% |