because of its way of "Inverse Order OF Idexing",and "The GiST Tree is
well for larting lan but doesn't for chinese lan(also ineffifent for
Japanese lan)"。
About japanese look at http://www.oss.ecl.ntt.co.jp/tsearch2j/ (it's on
Japanese, but you can contact with developer)
I only know that GiST is also "Inverse Order OF Idexing",but of course
it is a tree NOT as lucene does
Tsearch2 doesn't use inverted index (yet), and so it easy to update (your index
is always full - online indexing), but it hasn't good performance on large data
set. The limit is about 10^5 - 10^6 rows in practice.
--
Teodor Sigaev E-mail: teodor@xxxxxxxxx
WWW: http://www.sigaev.ru/
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