int_cell_power_law_fit

WI-17: the pooled fit and training target, one per race x compound hardness rank.

Part of the Physics family.

WI-17: the pooled fit and training target, one per race x compound hardness rank. Each stint keeps its own intercept; within-stint demeaning removes it, beta is profiled on the grid and alpha is OLS through the origin. curve_incr_{5,10,15,20}_s is the curve over the fresh-tyre pace at tyre age 2 (the simulator’s anchor), the quantity Step 0 found identified (reliability ceiling 0.58-0.76) where alpha is not (0.07). fit_eligible: >= 3 qualifying stints (>= 5 laps over >= 2 ages) and >= 40 laps. No 2025 cells (no rank).

Lineage

Overview

Property	Value
Layer	intermediate
Family	Physics
Contract enforced	No
Upstream	int_power_law_lap
Model-level tests	unique_combination_of_columns

10 tests guard this model - 8 generic, 2 singular.

Columns

Column	Type	Nullable	Tests	Description
cell_id		Yes	not_null, unique
compound_hardness_rank		Yes	not_null
n_compound_labels		Yes	accepted_values	Distinct compound names in the cell; 1 by construction (one C-code per label per race).
beta		Yes	not_null
r2_within		Yes	not_null
fit_eligible		Yes	not_null