Methods

Every number on Schemer comes with its method. Each page below states what a method computes, the formula and the cohort its percentiles are computed within. A method is versioned: when it changes, it gets a new id, and the old one stays documented.

Method pages

Method	Id	Version	Family	As of
Box score aggregates	`box-score`	`canonical`	Base box stats	2026-07-14
True shooting percentage	`ts-pct`	`canonical`	Base box stats	2026-07-14
Four factors and pace	`four-factors`	`canonical`	Base box stats	2026-10-07
Season-relative context	`pctl-v0`	`pctl-v0`	Percentile and distribution	2026-07-19
Postseason and play-in context	`pctl-post-v0`	`pctl-post-v0`	Percentile and distribution	2026-10-08
Possession rates	`pr-v0`	`pr-v0`	Possession rates	2026-07-19
Game score and composites	`gs-v0`	`gs-v0`	Game score and composites	2026-07-19
Junk minutes filter	`jm-v0`	`jm-v0`	Cleaning	2026-07-19
Possessions	`poss-v0`	`poss-v0`	Possession rates	2026-07-19
Cross-level identity	`xw-v0`	`xw-v0`	Identity	2026-07-19
Team context	`tc-v0`	`tc-v0`	Team ratings and context	2026-07-19
Elo rating	`elo-v0`	`elo-v0`	Models (game and rating)	2026-07-19
Elo win probability	`elo-winprob-v0`	`elo-winprob-v0`	Models (game and rating)	2026-07-19
In-game win probability	`wp-v0`	`wp-v0`	Models (game and rating)	2026-10-08
Pregame game predictions	`m3-v0`	`m3-v0`	Models (game and rating)	2026-10-08
Player projections	`m4-v0`	`m4-v0`	Models (player)	2026-10-08
Era-normalized (SD) stats	`era-v0`	`era-v0`	Era normalization	2026-10-08
Box Plus/Minus 2.0	`bpm2-v0`	`bpm2-v0`	Value metrics	2026-10-08
Value over replacement player	`vorp-v0`	`vorp-v0`	Value metrics	2026-10-08
Box Plus/Minus 2.0, aligned with the methodology page	`bpm2-v1`	`bpm2-v1`	Value metrics	2026-10-08
Value over replacement player over bpm2-v1	`vorp-v1`	`vorp-v1`	Value metrics	2026-10-08
Win shares	`ws-v0`	`ws-v0`	Value metrics	2026-10-08
Career rollup and receipts	`career-v0`	`career-v0`	Career	2026-10-08
Postseason career rollup and receipts	`career-post-v0`	`career-post-v0`	Career	2026-10-11
Per-player input coverage	`cov-v0`	`cov-v0`	Career	2026-10-09
Postseason series depth	`depth-v0`	`depth-v0`	Postseason	2026-10-08

Freshness

Daily batch. Each method states its as_of date; data pages will state the date of the last game they read. Nothing updates during a game.

Still to come

The data sources disclosure, the attribution notices and the corrections log publish here with the data pages.