int_driver_circuit_affinity

One row per (driver_id, circuit_id).

Part of the Skill family.

One row per (driver_id, circuit_id). How much faster/slower is this driver at this circuit relative to their career average? circuit_id is the physical-circuit identifier, so renamed events and double-headers at one venue (e.g. mexican_grand_prix / mexico_city_grand_prix) pool into a single track record. Shrunk toward driver mean (Bayesian, prior = 5 virtual races). Negative = faster at this circuit than career average. affinity_confidence [0,1]: < 0.17 = prior-dominated. Identifies drivers who suit high-downforce, street, etc. tracks.

Lineage

Overview

Property	Value
Layer	intermediate
Family	Skill
Contract enforced	No
Tags	driver_rating, driver_affinity
Upstream	int_driver_race_skill_loro

17 tests guard this model - 15 generic, 2 singular.

Columns

Column	Type	Nullable	Tests	Description
driver_circuit_id		Yes	not_null, unique	Surrogate PK = hash(driver_id, circuit_id)
driver_id		Yes	not_null	Driver identifier
circuit_id		Yes	not_null	Physical-circuit identifier (slug of circuit_name). Collapses event-slug aliases (renamed events, double-headers) onto one venue.
circuit_name		Yes	not_null	Canonical circuit display name for this circuit_id.
n_obs		Yes	not_null	Number of race-residual observations backing this estimate
seasons_observed_n		Yes	not_null	Count of distinct seasons the driver raced at this circuit
raw_affinity_s		Yes	not_null	Unshrunk observed mean residual at this circuit. Negative = faster.
shrunk_affinity_s		Yes	not_null	Bayesian posterior mean. Pulled toward driver global mean.
shrunk_affinity_se_s		Yes	not_null, expect_column_values_to_be_between	Posterior standard error in seconds. Non-negative.
shrunk_affinity_ci_low_s		Yes	not_null	Lower bound of 95% credible interval
shrunk_affinity_ci_high_s		Yes	not_null	Upper bound of 95% credible interval
affinity_confidence		Yes	not_null, expect_column_values_to_be_between	Data fraction of posterior mass. n_obs / (n_obs + 5). [0, 1].