gsingers at apache
Sep 15, 2007, 4:30 AM
Post #2 of 2
(941 views)
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Sounds like faceting, I think. Have you looked at Solr?
-Grant
On Sep 15, 2007, at 1:15 AM, Mohammad Norouzi wrote:
> Hello,
> In our application, we have many categories (indexes) in which
> different
> kind of information have been indexed. we provided a facility for
> our users
> to opt their category to search and we also provided a way that
> they select
> more than one category to search, afterwards, we must return back
> the result
> from selected categories in which they are related to each other
> and discard
> other documents which their IDs are not common with the results
> from other
> categories, in other words, an intersection of all results
>
> currently, each category has an ID field and this help us to find
> which
> document to select and which one to discard, in order to implement
> this, we
> defined a HitCollector in which, we collect all the Lucene's
> document IDs to
> load the document later as well as all category ID to find its
> relationship
> with other result. we store these IDs in a java.util.BitSet
> structure to
> save the memory and also for performance issues.
> now this works fine, but it's messy, further more, to find all common
> documents we have to compare all the results two by two and this is
> really
> exhaustive and eat up the CPU resources and this deprived us from the
> Lucene's speed of searching.
>
> In my opinion, if this simple relationship could be embedded inside
> the
> Lucene Api at low level sections of loading documents, this process
> would be
> done very fast, and I think this feature will make many Lucene's
> user happy
>
> I want to know, whether this is possible for Lucene developers or
> not, or it
> is in their TO DO list or they are going to provide it in future.
>
> thank you all Lucene developers and producers.
>
> --
> Regards,
> Mohammad Norouzi
> --------------------------
> see my blog: http://brainable.blogspot.com/
> another in Persian: http://fekre-motefavet.blogspot.com/
--------------------------
Grant Ingersoll
http://lucene.grantingersoll.com
Lucene Helpful Hints:
http://wiki.apache.org/lucene-java/BasicsOfPerformance
http://wiki.apache.org/lucene-java/LuceneFAQ
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