fuzzy are simply not indexed.
If you wont to search quickly with fuzzy search, you should index word
and their ngrams, it's the "do you mean" pattern.
you first select used word wich share ngram with the query word, the
distance is computed with levenstein, and you use this word as a
synonym.
M.
Le 24 nov. 07 à 17:36, Timo Nentwig a écrit :
Hi!
I search an 1.5 gig index and fuzzy queries are really slow;
something like
avg. ~500ms (IndexSearcher.search(Query, HitCollector)).
When performing exact queries I archieve response times <25ms. What
is it that
makes fuzzy queries so slow? Increased index access due to more
terms, i.e.
disk IO?
And no, my fuzzy queries (fuzzy factor 0.8) don't blow up to a
boolean query
with 100s clauses but maybe something...less than 10.
Thanks
Timo
P.S. arent' there any "best practices" for lucene? Does everybody
have to find
out on his own (over and over again) and spend a lot of time reading
and
understanding lucene's code base?
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