medium · flats · 2 storeys
B0062: a duplex on a 16.1 × 18.5 m lot
2 dwellings, 11 rooms. The pooled front across all methods holds 393 nondominated designs.
Requirements
- Lot
- 16.1 × 18.5 m (298 m²)
- Street side faces
- 270° (0 = north)
- Setbacks front / rear / left / right
- 3.5 / 5.7 / 2.2 / 1.5 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 30% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.512
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U1 | 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% | 0.174 | 196 | 0.5 | |
| Random search | 100% | 0.073 | 1500 | 3.1 | |
| Simulated annealing | 100% | 0.147 | 1500 | 4.1 | |
| NSGA-II | 100% | 0.163 | 1500 | 5.6 | |
| CP-SAT | 100% | 0.199 | 47 | 6.8 | |
| Random sketch + repair | 67% | 0.091 | 1500 | 4.1 | repair collapse |
| Heuristic-seeded NSGA-II | 67% | 0.064 | 1500 | 3.8 | 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 | 6% | 33% | 29% | – | – | – | 1% | – |
| Random search | 42% | 92% | 68% | 49% | 17% | 73% | 36% | 84% |
| Simulated annealing | 23% | 55% | 34% | 12% | 7% | 40% | 17% | 38% |
| NSGA-II | 18% | 51% | 37% | 13% | 7% | 27% | 18% | 32% |
| Random sketch + repair | 39% | 53% | 60% | 10% | 19% | 35% | 23% | 42% |
| Heuristic-seeded NSGA-II | 31% | 75% | 72% | 34% | 4% | 25% | 13% | 20% |