int_lap_residual_stint_detrend

Per-stint linear drift of driver_skill_residual_s against lap_in_stint, fit on pre-cliff laps only (cliff_onset_passed = FALSE) via OLS REGR_SLOPE.

Part of the Residual family.

Per-stint linear drift of driver_skill_residual_s against lap_in_stint, fit on pre-cliff laps only (cliff_onset_passed = FALSE) via OLS REGR_SLOPE. One row per stint with a pre-cliff lap; the slope is fit where >= 3 of those laps have a non-NULL residual (the ones REGR_SLOPE uses; CO-04, was COUNT(*)), and is 0.0 otherwise (no detrending, no data). Consumed by fct_cliff_prediction_features to produce next_lap_degradation_jump_detrended_s the per-lap first-difference with this per-stint drift (fuel burn / track evolution leaking into the residual) removed. Diagnostic: pooled median slope ≈ -0.072 s/lap across ~5,950 stints.

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Lineage

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Overview

Property	Value
Layer	intermediate
Family	Residual
Contract enforced	No
Upstream	int_lap_residual_decomposed

4 tests guard this model - 3 generic, 1 singular.

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Columns

Column	Type	Nullable	Tests	Description
stint_id		Yes	not_null, unique	Surrogate key combining race_year, race_id, driver_id, stint_number (grain).
drift_s_per_lap		Yes	not_null	OLS slope of driver_skill_residual_s vs lap_in_stint over pre-cliff laps (seconds per lap). Negative = residual trending faster through the stint. 0.0 when the stint has fewer than 3 pre-cliff laps.