hard · maisonette · 2 storeys
B0016: a rowhouse on a 22.6 × 27.6 m lot
3 dwellings, 29 rooms. The pooled front across all methods holds 299 nondominated designs.
Requirements
- Lot
- 22.6 × 27.6 m (624 m²)
- Street side faces
- 30° (0 = north)
- Setbacks front / rear / left / right
- 5.7 / 7 / 1.2 / 1.5 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- no, street-entered dwellings
- Open space, net of parking
- ≥ 32% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.354
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 2BR | all | 63 | entry, living, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bathroom, circulation |
| U1 | 3BR | all | 84 | entry, living, dining, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bedroom secondary, bathroom, circulation |
| U2 | 2BR | all | 63 | entry, living, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bathroom, circulation |
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 | 832 | 3.4 | |
| Random search | 0% | 0.000 | 1500 | 6.1 | |
| Simulated annealing | 0% | 0.000 | 1500 | 5.9 | |
| NSGA-II | 33% | 0.054 | 1500 | 6.8 | |
| CP-SAT | 0% | 0.000 | 0 | 4.6 | solver timeout |
| Random sketch + repair | 100% | 0.252 | 1500 | 7.0 | repair collapse |
| Heuristic-seeded NSGA-II | 67% | 0.089 | 1500 | 5.9 | 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 | 40% | 90% | 32% | – | – | 6% | 35% | 100% |
| Random search | 39% | 100% | 100% | 0% | 5% | 75% | 94% | 56% |
| Simulated annealing | 44% | 74% | 81% | 0% | 3% | 57% | 67% | 37% |
| NSGA-II | 23% | 66% | 66% | 0% | 2% | 74% | 44% | 25% |
| Random sketch + repair | 37% | 54% | 53% | 0% | 1% | 36% | 38% | 25% |
| Heuristic-seeded NSGA-II | 43% | 91% | 45% | 0% | 1% | 22% | 38% | 24% |