Model/domain
Khalim Conn-Kowlessar fc5f10ea92 fix(rating): floor the continuous SAP score at 1 (SAP 10.2 §13 / RdSAP 10 §13)
The SAP rating is spec-floored at 1 ("if the result of the calculation is
less than 1, the rating is 1"). `sap_rating_integer` already clamps, but the
continuous `sap_score_continuous` did not — so a degenerate dwelling could
emit a physically impossible negative SAP. Apply the same max(1, …) floor to
the continuous value (the un-rounded part is for sensitivity near real
ratings, not for negative ratings).

Removes a -12.3 accuracy outlier on the committed corpus (cert 422000111926,
lodged at the floor of 1, was computing -11.3): within-0.5 70.2% -> 70.3%,
MAE 0.845 -> 0.833. Ratcheted the corpus MAE ceiling to 0.84. Unit-pinned in
test_calculator.

pyright not installed in this codespace (strict gate not run locally).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-19 14:03:13 +00:00
..
addresses standardist Address 2026-05-22 10:13:32 +00:00
billing feat(modelling): attribute per-measure bill savings via a telescoping cascade 2026-06-03 18:01:11 +00:00
data_transformation moved classifier data transformation to an easy one 2026-06-01 14:53:34 +00:00
epc move overlas to its own thing 2026-06-18 10:04:14 +00:00
epc_prediction refactor(epc-prediction): PR review — rename ComparableProperty, relocate PredictionTarget 2026-06-16 13:34:44 +00:00
fuel_rates feat(fuel-rates): FuelRates snapshot + repository foundation (ADR-0014) 2026-06-02 09:29:07 +00:00
geospatial feat(geospatial): one-read spatial reference (coords + restrictions) 2026-06-04 17:13:39 +00:00
magicplan add todo comment for named ranges 2026-06-10 13:32:11 +00:00
modelling Overlay landlord property-type and built-form corrections onto the Effective EPC 🟩 2026-06-17 18:06:29 +00:00
property Fold landlord overrides onto the lodged EPC to form the Effective EPC 🟩 2026-06-16 17:18:31 +00:00
property_baseline feat(baseline): sap_code_to_fuel normalizes via the calculator's own helper 2026-06-05 18:59:25 +00:00
sap10_calculator fix(rating): floor the continuous SAP score at 1 (SAP 10.2 §13 / RdSAP 10 §13) 2026-06-19 14:03:13 +00:00
sap10_ml fix(uvalues): apply §5.8 insulation R to stone walls (RdSAP 10 p.41-42) 2026-06-17 00:26:25 +00:00
tasks added postcode splitter rewrite to ddd 2026-05-19 16:35:09 +00:00
building_geometry.py feat(modelling): floor Recommendation Generator + ground-floor-area geometry 2026-06-03 09:12:29 +00:00
postcode.py get rid of comments 2026-05-20 13:21:11 +00:00