int_era_normalized_driver_rating

One row per (driver_id, season).

Part of the Skill family.

One row per (driver_id, season). The published driver-season rating. era_adjusted_rating = shrunk_residual_s with NO era offset (WI-14b, F45): the rating is teammate-relative (median lap-by-lap gap to the teammate, F40), so a car-era shift moves both teammates alike and cancels. The old ungated bridge-driver offset (t = -1.5) inverted the between-era field-mean gap. Negative = faster than his teammate(s). The bridge-driver shift is still measured and published as diagnostics (era_shift_global_s, era_shift_se_s, n_bridge_drivers, low_anchor_sample_flag); none of them moves era_adjusted_rating. T35 (assert_era_offset_shrinks_gap) fails if an ungated offset returns.

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Lineage

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Overview

Property	Value
Layer	intermediate
Family	Skill
Contract enforced	No
Tags	driver_rating, era_rating
Upstream	int_driver_season_ratings

18 tests guard this model - 16 generic, 2 singular.

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Columns

Column	Type	Nullable	Tests	Description
driver_season_id		Yes	not_null, unique	Surrogate PK = hash(driver_id, season). Matches int_driver_season_ratings.
driver_id		Yes	not_null, relationships	Driver identifier
season		Yes	not_null	Race year (integer)
raw_residual_mean_s		Yes	not_null	Unadjusted season mean. Not era-adjusted.
shrunk_residual_s		Yes	not_null	Bayesian posterior mean (season shrinkage applied, no era offset).
era_adjusted_rating		Yes	not_null	The driver-season rating, equal to shrunk_residual_s (no era offset, F45). Negative = faster than his teammate(s). Key output column.
era_adjusted_rating_se_s		Yes	not_null, expect_column_values_to_be_between	The season rating’s posterior SE (shrunk_residual_se_s; 0 where that is NULL).
era_adjusted_rating_ci_low_s		Yes	not_null	Lower bound of 95% CI on era_adjusted_rating
era_adjusted_rating_ci_high_s		Yes	not_null	Upper bound of 95% CI on era_adjusted_rating
rating_confidence		Yes	not_null, expect_column_values_to_be_between	n_races / (n_races + 5). [0, 1].
bridge_driver_anchor_flag		Yes	not_null	TRUE if the driver raced >= 8 races on each side of the 2022 boundary (the population behind the diagnostic era_shift_global_s). Anchors nothing: no offset is applied.
era_shift_global_s		Yes		Diagnostic only: mean pre-minus-post shift of the bridge drivers’ season ratings. NOT applied to era_adjusted_rating (F45).
low_anchor_sample_flag		Yes	not_null	Diagnostic only: TRUE if fewer than 3 bridge drivers were found. No offset is applied either way.