I know the LUCENE " inverted index " is just like follows:
keyword doc_id[frequence] location
guangzhou 1[2] 3，6
he 2[1] 1
i 1[1] 4
live 1[2],2[1] 2，5，2
shanghai 2[1] 3
Yes
so ,before I thought that A node In GiST tree is very like the above :
In the tree's node , it has several value for storing its's
turple_id[frequence] location ,and that is why I thoutht the "
BUT now , I'm lost again ,how does Gist tree store lexem and how to find
his correspoding tuples in database( including frequence location)?
Tsearch2 use "direct" index: each leaf tuple in tree represent document,
internal tuples represents union of documents.
--
Teodor Sigaev E-mail: teodor@xxxxxxxxx
WWW: http://www.sigaev.ru/
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