int_driver_race_skill_loro

Equal-car driver skill, race grain (race_year, race_id, driver_id).

Part of the Skill family.

Equal-car driver skill, race grain (race_year, race_id, driver_id). driver_skill_loro_s = MEDIAN(own lap time - teammate lap time) over the clean laps both drivers ran, paired on lap_number (WI-14b, F40, FD5 option C); negative = faster than the teammate; used by the rating chain. It replaced P20(own) minus the teammate’s median, which rated lap-time scatter as speed (mean pair sum -1.83 s). driver_skill_field_s = median pace delta minus the de-biased constructor×race FE (int_constructor_car_fe.car_fe_s, car pace net of driver skill); used only by int_driver_circuit_era_affinity / Ghost Car Standings leaderboard, fixing the weak-teammate inflation confound; negative = faster than the car term.

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Lineage

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Overview

Property	Value
Layer	intermediate
Family	Skill
Contract enforced	No
Tags	driver_rating, causal_decomposition
Upstream	int_lap_fuel_state, int_field_pace_curve, stg_laps, int_event_corrections, int_track_evolution, int_constructor_car_fe

11 tests guard this model - 9 generic, 2 singular.

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Columns

Column	Type	Nullable	Tests	Description
driver_race_skill_id		Yes	not_null, unique	Surrogate PK = hash(race_year, race_id, driver_id)
driver_id		Yes	not_null, relationships	Driver identifier
race_year		Yes	not_null	Race year (integer)
race_id		Yes	not_null, relationships	Race identifier (numeric)
driver_skill_loro_s		Yes		Equal-car rating, seconds: the median lap-by-lap gap to the teammate, MEDIAN(own lap_time_s - teammate lap_time_s) over laps both ran clean (same lap number, correction_weight 1, dry). Negative = faster than the teammate. Antisymmetric: a two-driver car’s two values sum to 0 (T30). NULL when no teammate has a clean lap on any lap number the driver ran clean (no equal-car reference). Used by the rating chain.
driver_skill_field_s		Yes		Field-anchored equal-car skill, seconds. Median pace delta minus the de-biased car term (int_constructor_car_fe.car_fe_s the constructor×race FE, car pace net of driver skill). The FE’s global driver anchor fixes the weak-teammate inflation confound that the old constructor-median term still leaked (that median absorbed the team’s driver skill, so subtracting it handed a weak driver’s slowness back as skill). NULL when the constructor×race FE is unidentified for this race. Used only by int_driver_circuit_era_affinity (Ghost Car Standings leaderboard).
clean_lap_count		Yes	not_null	The driver’s own clean laps in this race (correction_weight 1, dry).
paired_lap_count		Yes	not_null	Clean laps paired with a teammate’s clean lap on the same lap number: the sample behind driver_skill_loro_s. 0 exactly when driver_skill_loro_s is NULL.