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| author | Yorhel <git@yorhel.nl> | 2009-05-09 10:02:46 +0200 |
|---|---|---|
| committer | Yorhel <git@yorhel.nl> | 2009-05-09 10:02:46 +0200 |
| commit | ce6d43aed955effe136f1ce3682828d2d43109cb (patch) | |
| tree | e55754ece45875da53568c5e616a36a59540633f /util/dump.sql | |
| parent | 9909b50b1973d02717c89d4e42b274909d59a0ac (diff) | |
Don't consider VNs with AVG(vote) < 0 on tag pages
The bayesian ranking algorithm isn't exactly meant to be used to
differentiate between absolute values, so do a pre-check on AVG(vote)
before considering a VN in the rating.
I've also played around with using plain old averages as score, but I'd
say the ordering is a lot better with the bayesian ranking, the displayed
score is just slightly more confusing.
Diffstat (limited to 'util/dump.sql')
| -rw-r--r-- | util/dump.sql | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/util/dump.sql b/util/dump.sql index 5003c6e8..81343307 100644 --- a/util/dump.sql +++ b/util/dump.sql @@ -576,8 +576,8 @@ BEGIN SELECT * FROM tags_vn UNION SELECT * FROM tag_vn_childs(); -- grouped by (tag, vid, uid), so only one user votes on one parent tag per VN entry CREATE OR REPLACE TEMPORARY VIEW tags_vn_grouped AS - SELECT tag, vid, uid, AVG(vote)::real AS vote, COALESCE(AVG(spoiler), 0)::real AS spoiler - FROM tags_vn_all GROUP BY tag, vid, uid; + SELECT tag, vid, uid, MAX(vote)::real AS vote, COALESCE(AVG(spoiler), 0)::real AS spoiler + FROM tags_vn_all WHERE vote > 0 GROUP BY tag, vid, uid; -- grouped by (tag, vid) and serialized into a table DROP INDEX IF EXISTS tags_vn_bayesian_tag; TRUNCATE tags_vn_bayesian; |