On 4/5/26 3:32 PM, Darkhan wrote:
Hi all,
I built pg_kazsearch, a PostgreSQL extension that adds full-text search
support for Kazakh. Currently there's no Kazakh dictionary, stemmer, or
stop word list available in PostgreSQL, so anyone searching Kazakh text is
stuck with trigram matching or application-level workarounds.
Kazakh is agglutinative — a single word can carry 5-6 suffixes, which makes
standard search approaches miss most relevant results. pg_kazsearch
provides a custom Kazakh stemmer (core written in Rust), a stop word list,
and a text search dictionary that plugs into the standard PostgreSQL FTS
infrastructure — GIN indexes, ts_rank, phrase search all work out of the
box.
I tested it on a dataset of 3,000 real Kazakh news articles. On the same
query, pg_kazsearch returns 61 relevant articles vs 1 with trigram search,
with a 23% improvement in recall overall.
You can install it with a single command via deb package or Docker image,
no compilation needed.
Repo: https://github.com/darkhanakh/pg-kazsearch
I'd appreciate any feedback, especially from anyone working on text search
internals or with experience supporting non-Latin or agglutinative
languages in PostgreSQL.
Thanks, Darkhan
Hello,
Thanks for your work.
I don't know anything about Kazakh.
But have you try to add it to Snowball stemmer [1] ?
As Postgres uses it, you have more chances to have Kazakh
supported in future versions.
1: https://github.com/snowballstem/snowball
--
Adrien NAYRAT
https://pro.anayrat.info
