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Heating sub-fields can't be field-moded without breaking system coherence, so the whole SapHeating cluster is now copied as a unit from a single coherent donor rather than inherited from the structural template: the neighbour matching the cohort's modal heating signature (main fuel + category + cylinder presence), most recent among the matches (recent cert = current system). Including cylinder presence in the signature is load-bearing — it protects has_hot_water_cylinder + cylinder_insulation (a bare fuel+cat signature regressed them). Corpus (150pc/514): heating_main_control 66.3 -> 73.9% (+7.6, the target), main_fuel 92.8 -> 96.9, category 90.7 -> 95.7, water_fuel 92.8 -> 96.3, water_code 88.5 -> 95.3, has_cylinder 81.1 -> 89.7, secondary 36.2 -> 42.0. SAP MAE vs lodged 7.08 -> 6.00 (calculator floor 1.57). cylinder_insulation -13.6 corpus (tiny-n) but +33pp on the fixture; AC requires control up + fuel/category hold + SAP not worsened, all met. Gate (36-target fixture): zero regression; ratcheted main_category 0.8889->0.9444, main_control 0.7500->0.8056, water_fuel 0.9167->0.9722, water_code 0.8889->0.9444, cylinder_insulation_type 0.1667->0.5000. This is the per-component heating method ([[feedback_per_component_best_method]]): coherent donor, never field-mode. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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| .. | ||
| addresses | ||
| billing | ||
| epc_prediction | ||
| fuel_rates | ||
| magicplan | ||
| modelling | ||
| property | ||
| property_baseline | ||
| sap10_calculator | ||
| tasks | ||
| __init__.py | ||
| test_building_geometry.py | ||
| test_postcode.py | ||