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homemaker-layout/experiments/results/ab_9gj_ramp.csv

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Make the crinkliness factor one-sided: stop billing the daylit wall twice The tail rescale shipped in cd392e7 is a measured NULL as a search intervention -- 12 of 12 pairs byte-identical on harbor and maple, 8000 evals from a plateau, not merely underpowered. Of course it is: the whole failing tail is 0.034% of corpus value. Looking at the rest of the factor, prompted by the owner, found something much larger above the threshold. crink = area_outside/area = (L*h)/A, so 1/crink = A/(L*h) is the room's mean depth from its daylit wall in storey-heights. That is the right variable for a daylight rule, and the fail boundary it implies (1/crink = 1.62, i.e. 4.86 m at h=3) is a sensible one that agrees with 38.3's frontage bound derived independently. What is wrong is hanging a TWO-sided gaussian on it: * The near side penalises a room for having MORE daylit wall than target -- while leaf_cost's siblings edge_cost and outside_edge_cost already charge that same wall at exterior_wall=100 and boundary_wall=133.3 per m2. The wall is billed once in cost and again as lost value. * It never earns its keep as a failure either: the over-exposed branch only reaches FAIL_THRESHOLD above crinkliness 21.5, and the corpus maximum is 3.95. It has never produced a single fail; it only removes value. * 133 of the 318 passing graded leaves in the 500k baseline (42%) sit on that side, mean quality 0.810. crinkliness_shape="daylight" (default OFF, "gaussian" is stock) clips it: a room shallower than the gaussian's peak scores 1.0, because daylight is a sufficiency requirement and surplus is the cost model's business, not this factor's. Clipping at the PEAK rather than at FAIL_THRESHOLD is deliberate -- it keeps the factor continuous and preserves the graded approach to the daylight limit, where clipping at the threshold would put a 10x cliff on the exact boundary the 0.5**n fail multiplier already steps on. Fail set byte-identical on all 21 corpus artefacts for all four shape/tail combinations, so stock stays a valid yardstick for every arm. Area-weighted crinkliness quality 0.480 -> 0.513, leaf quality product 0.2722 -> 0.2831; per-artefact score +0.2%..+19.6%, and unlike the ramp it reaches health-centre and programme-house, where the tail change was 0.000%. Note "daylight" clips the OPPOSITE side from 38.1's superseded compact_ok, which forgives being buried; composing either with those modes is refused. ab_9gj_ramp.py becomes ab_9gj_crinkliness.py and takes named arms, since it now covers both changes; its first arm is the baseline and the yardstick. Refs homemaker-py-9gj. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MJ84Feep79Hhm3E4zZJmnB
2026-09-05 07:27:02 +00:00
programme,start,seed,tail,hard,soft,total,score,elapsed_s
harbor-house,coldstart-500000-s0.dom,0,gaussian,8,25,33,1.85176240526207e-11,403.6
harbor-house,coldstart-500000-s0.dom,0,ramp,8,25,33,1.85176240526207e-11,413.5
harbor-house,coldstart-500000-s2.dom,0,gaussian,12,30,42,3.0491865573276097e-14,364.4
harbor-house,coldstart-500000-s2.dom,0,ramp,12,30,42,3.0491865573276097e-14,361.9
maple-court,coldstart-500000-s1.dom,0,gaussian,17,56,73,4.626623187133073e-25,445.0
maple-court,coldstart-500000-s1.dom,0,ramp,17,56,73,4.626281900486264e-25,443.8
harbor-house,coldstart-500000-s0.dom,1,gaussian,8,24,32,3.749216704165142e-11,417.1
harbor-house,coldstart-500000-s0.dom,1,ramp,8,24,32,3.749216704165142e-11,425.6
harbor-house,coldstart-500000-s2.dom,1,gaussian,12,30,42,3.0491865573276097e-14,355.6
harbor-house,coldstart-500000-s2.dom,1,ramp,12,30,42,3.0491865573276097e-14,364.3
maple-court,coldstart-500000-s1.dom,1,gaussian,17,56,73,4.629596572120101e-25,442.4
maple-court,coldstart-500000-s1.dom,1,ramp,17,56,73,4.629661078538839e-25,444.8
harbor-house,coldstart-500000-s1.dom,0,gaussian,7,36,43,1.4676873187056738e-15,373.2
harbor-house,coldstart-500000-s1.dom,0,ramp,7,36,43,1.4676873187056738e-15,375.2
maple-court,coldstart-500000-s0.dom,0,gaussian,18,35,53,1.1458353761153645e-17,483.1
maple-court,coldstart-500000-s0.dom,0,ramp,18,35,53,1.1458353761153645e-17,462.6
maple-court,coldstart-500000-s2.dom,0,gaussian,12,43,55,4.278297968488281e-18,481.2
maple-court,coldstart-500000-s2.dom,0,ramp,12,43,55,4.267745195711144e-18,481.8
harbor-house,coldstart-500000-s1.dom,1,gaussian,7,36,43,1.4676873187056738e-15,378.6
harbor-house,coldstart-500000-s1.dom,1,ramp,7,36,43,1.4676873187056738e-15,380.1
maple-court,coldstart-500000-s0.dom,1,gaussian,17,37,54,6.645342661051106e-18,456.4
maple-court,coldstart-500000-s0.dom,1,ramp,17,37,54,6.645342661051106e-18,478.6
maple-court,coldstart-500000-s2.dom,1,gaussian,12,43,55,4.258152742657858e-18,517.1
maple-court,coldstart-500000-s2.dom,1,ramp,12,43,55,4.258152742657858e-18,515.6
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