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Model/domain/epc_prediction
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Khalim Conn-Kowlessar 4fa20ae76b fix(epc-prediction): size-representative template selection (ADR-0029) 
Template (the comparable whose structure/geometry is copied wholesale)
was members[0] — an arbitrary draw from the API search order. With floor
area varying widely within a property_type cohort (NG71AA houses span
51-340 m2), this made the copied geometry noisy and systematically large.

Pick the member whose floor area is closest to the cohort median instead,
implementing ADR-0029 decision 4's unimplemented "closest on size"
criterion while keeping the structure coherent (it is still one real
property, so floor dims / windows / parts stay internally consistent for
the calculator).

Smoke corpus (29 leave-one-out predictions):
  floor_area  mean|.| 68.0 -> 37.9 m2  (bias +46.8 -> -3.9)
  window_area mean|.| 11.1 -> 7.3 m2
  parts       mean|.| 1.00 -> 0.38
  SAP |pred-calc - calc(actual)| MAE 7.19 -> 4.86

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-14 00:05:40 +00:00
..
__init__.py feat(epc-prediction): Comparable Properties selection ladder (ADR-0029) 2026-06-13 23:44:57 +00:00
comparable_properties.py feat(epc-prediction): Comparable Properties selection ladder (ADR-0029) 2026-06-13 23:44:57 +00:00
epc_prediction.py fix(epc-prediction): size-representative template selection (ADR-0029) 2026-06-14 00:05:40 +00:00
prediction_comparison.py feat(epc-prediction): leave-one-out validation harness (ADR-0029) 2026-06-13 23:55:05 +00:00