medium · flats · 2 storeys
B0011: a triplex on a 16 × 22.4 m lot
3 dwellings, 16 rooms. The pooled front across all methods holds 228 nondominated designs.
Requirements
- Lot
- 16 × 22.4 m (358 m²)
- Street side faces
- 330° (0 = north)
- Setbacks front / rear / left / right
- 6.1 / 6.2 / 1.4 / 1.2 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 29% of the lot
- Parking spaces
- 1
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.613
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U1 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U2 | 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 | 0% | 0.000 | 391 | 0.8 | |
| Random search | 0% | 0.000 | 1500 | 3.3 | |
| Simulated annealing | 33% | 0.044 | 1500 | 3.5 | |
| NSGA-II | 100% | 0.130 | 1500 | 4.6 | |
| CP-SAT | 100% | 0.091 | 17 | 6.9 | |
| Random sketch + repair | 67% | 0.083 | 1500 | 4.7 | repair collapse |
| Heuristic-seeded NSGA-II | 0% | 0.000 | 1500 | 3.5 | 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.
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 | 10% | 70% | 100% | 4% | – | 1% | 11% | 1% |
| Random search | 94% | 100% | 99% | 96% | 25% | 84% | 56% | 93% |
| Simulated annealing | 43% | 86% | 82% | 35% | 14% | 58% | 43% | 67% |
| NSGA-II | 46% | 85% | 58% | 41% | 9% | 38% | 26% | 43% |
| Random sketch + repair | 43% | 81% | 52% | 28% | 12% | 42% | 59% | 49% |
| Heuristic-seeded NSGA-II | 21% | 78% | 94% | 13% | 4% | 19% | 26% | 19% |