medium · flats · 2 storeys
B0065: a triplex on a 16.4 × 19 m lot
3 dwellings, 15 rooms. The pooled front across all methods holds 531 nondominated designs.
Requirements
- Lot
- 16.4 × 19 m (312 m²)
- Street side faces
- 165° (0 = north)
- Setbacks front / rear / left / right
- 3.9 / 5.5 / 1.8 / 1.8 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 35% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.622
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | studio | 0 | 33 | entry, living, kitchen, bathroom |
| 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 | 351 | 0.9 | |
| Random search | 0% | 0.000 | 1500 | 4.1 | |
| Simulated annealing | 100% | 0.084 | 1500 | 4.0 | |
| NSGA-II | 100% | 0.100 | 1500 | 5.2 | |
| CP-SAT | 100% | 0.063 | 16 | 6.6 | |
| Random sketch + repair | 67% | 0.052 | 1500 | 5.0 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.105 | 1500 | 5.6 |
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 | C01 | C04 | C05 | C06 | C07 | C08 | C09 | C10 | C11 |
|---|---|---|---|---|---|---|---|---|---|
| Heuristic | – | 33% | 62% | 100% | 5% | – | 3% | 1% | 3% |
| Random search | – | 86% | 100% | 100% | 92% | 20% | 83% | 57% | 86% |
| Simulated annealing | 6% | 53% | 78% | 63% | 42% | 11% | 57% | 37% | 63% |
| NSGA-II | – | 38% | 74% | 55% | 30% | 8% | 30% | 24% | 31% |
| Random sketch + repair | – | 50% | 72% | 69% | 21% | 25% | 26% | 52% | 41% |
| Heuristic-seeded NSGA-II | – | 23% | 71% | 44% | 25% | 3% | 17% | 23% | 18% |