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fix: expectation calculation was wrong

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This commit is contained in:
overflowerror 2024-08-03 20:36:55 +02:00
parent 903b8a253b
commit d47d5c4a76
1 changed files with 6 additions and 6 deletions
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12
migrations/0001_mobsMatchesAndRating.sql
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@ -97,13 +97,13 @@ WITH RECURSIVE ratings_history (ratings, last_update) AS (
CASE
WHEN winner = 1 THEN 1
ELSE 0
END::numeric - expectation
END::numeric - expectation_for_mob1
) AS mob1rating,
mob2rating + 32::numeric * (
CASE
WHEN winner = 2 THEN 1
ELSE 0
END::numeric - expectation
END::numeric - (1 - expectation_for_mob1)
) AS mob2rating
FROM
(
@ -118,9 +118,9 @@ WITH RECURSIVE ratings_history (ratings, last_update) AS (
(1::numeric /
(1::numeric + power(
10::numeric,
(mob1rating - mob2rating) / 400::numeric
(mob2rating - mob1rating) / 400::numeric
))
) AS expectation
) AS expectation_for_mob1
FROM
(
SELECT
@ -174,8 +174,8 @@ FROM jsonb_each(
CREATE VIEW mm_rating_trends (mob, rating, "date", id) AS
SELECT
key AS mob,
value AS rating,
cast(key AS numeric) AS mob,
cast(value AS numeric) rating,
"date",
id
FROM (