brackt/drizzle/0061_violet_mephistopheles.sql
Chris Parsons e62e9554c9
Add golf qualifying points simulator (Plackett-Luce Monte Carlo) (#223)
* Add golf QP simulator with Plackett-Luce model, fixes #120

- New `participant_golf_skills` table (migration 0061) for SG: Total and
  per-major American odds per player/season
- New `app/models/golf-skills.ts` with getGolfSkillsMap, getGolfSkillsForSeason,
  batchUpsertGolfSkills
- Full `GolfSimulator` implementation replacing the TODO stub: Plackett-Luce
  ranking model (PL_BETA=1.5, FIELD_SIZE=156), 10k Monte Carlo iterations,
  awards QP by finishing position, ranks by total QP across all 4 majors
- New admin route `sports-seasons/:id/golf-skills` with bulk CSV import,
  fuzzy name matching, per-player SG + per-major odds inputs; saves skills
  and auto-runs simulation on submit
- Simulator dropdown on sport admin sorted alphabetically; renamed to
  "Golf Qualifying Points Monte Carlo"
- Golf Skills button shown on sports season admin when simulator type is
  golf_qualifying_points
- Extract normalizeName/diceCoefficient to shared `app/lib/fuzzy-match.ts`,
  removing duplication from surface-elo and golf-skills routes
- Parallelize 4 DB queries in GolfSimulator.simulate() with Promise.all
- O(1) field array removal via swap-to-end + pop (was O(N) splice)
- Fix source tag: performance_model (not elo_simulation) for SG-based model
- 23 unit tests covering americanToImplied, getMajorOddsKey, resolveSkill,
  simulateMajor, and Monte Carlo calibration properties

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Fix oxlint errors: no-non-null-assertion and eqeqeq

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-24 21:46:02 -07:00

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SQL

CREATE TABLE IF NOT EXISTS "participant_golf_skills" (
"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
"participant_id" uuid NOT NULL,
"sports_season_id" uuid NOT NULL,
"sg_total" numeric(5, 2),
"datagolf_rank" integer,
"masters_odds" integer,
"us_open_odds" integer,
"open_championship_odds" integer,
"pga_championship_odds" integer,
"updated_at" timestamp DEFAULT now() NOT NULL
);
--> statement-breakpoint
DO $$ BEGIN
ALTER TABLE "participant_golf_skills" ADD CONSTRAINT "participant_golf_skills_participant_id_participants_id_fk" FOREIGN KEY ("participant_id") REFERENCES "public"."participants"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
DO $$ BEGIN
ALTER TABLE "participant_golf_skills" ADD CONSTRAINT "participant_golf_skills_sports_season_id_sports_seasons_id_fk" FOREIGN KEY ("sports_season_id") REFERENCES "public"."sports_seasons"("id") ON DELETE cascade ON UPDATE no action;
EXCEPTION
WHEN duplicate_object THEN null;
END $$;
--> statement-breakpoint
CREATE UNIQUE INDEX IF NOT EXISTS "participant_golf_skills_unique" ON "participant_golf_skills" USING btree ("participant_id","sports_season_id");