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Posted to java-user@lucene.apache.org by "Kevin A. Burton" <bu...@newsmonster.org> on 2003/08/12 03:03:50 UTC
Providing my own scoring.
I don't see this documented anywhere and before I start ripping apart
Lucene I wanted to find out if anyone has done this before.
I want to provide my own scoring of Lucene results based on my own score
algorithm. It isn't JUST based on word frequency but also a lot of
other metrics (think PageRank).
The problem is that i think I am going to have to do this with my own
subqueries or integrating directly into IndexSearcher while doing my own
scoring. Hits.doc() is expensive to say the least (I am assuming it
fetches all fields?) and it doesn't seem that there is a straight
forward way to add a visitor that will be called to develop my own
custom score.
Anyone have any advice here?
Kevin
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Re: Providing my own scoring.
Posted by "Chong K. Tsang" <ah...@u.washington.edu>.
I have changed the scoring method of my own lucene-based system. I made use of the Similarity class to create my own Similarity class. I also change some classes like TermQuery class in order to implement my own scoring.
I hope my experience can help you, Kevin.
Chong-Ki "Ki"
On Mon, 11 Aug 2003, Kevin A. Burton wrote:
> I don't see this documented anywhere and before I start ripping apart
> Lucene I wanted to find out if anyone has done this before.
>
> I want to provide my own scoring of Lucene results based on my own score
> algorithm. It isn't JUST based on word frequency but also a lot of
> other metrics (think PageRank).
>
> The problem is that i think I am going to have to do this with my own
> subqueries or integrating directly into IndexSearcher while doing my own
> scoring. Hits.doc() is expensive to say the least (I am assuming it
> fetches all fields?) and it doesn't seem that there is a straight
> forward way to add a visitor that will be called to develop my own
> custom score.
>
> Anyone have any advice here?
>
> Kevin
>
> --
> Help Support NewsMonster Development! Purchase NewsMonster PRO!
>
> http://www.newsmonster.org/download-pro.html
>
> Kevin A. Burton, Location - San Francisco, CA, Cell - 415.595.9965
> AIM - sfburtonator, Web - http://www.peerfear.org/
> GPG fingerprint: 4D20 40A0 C734 307E C7B4 DCAA 0303 3AC5 BD9D 7C4D
> IRC - freenode.net #infoanarchy | #p2p-hackers | #newsmonster
>
>
>
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Re: Providing my own scoring.
Posted by "Chong K. Tsang" <ah...@u.washington.edu>.
I have changed the scoring method of my own lucene-based system. I made use of the Similarity class to create my own Similarity class. I also change some classes like TermQuery class in order to implement my own scoring.
I hope my experience can help you, Kevin.
Chong-Ki "Ki"
On Mon, 11 Aug 2003, Kevin A. Burton wrote:
> I don't see this documented anywhere and before I start ripping apart
> Lucene I wanted to find out if anyone has done this before.
>
> I want to provide my own scoring of Lucene results based on my own score
> algorithm. It isn't JUST based on word frequency but also a lot of
> other metrics (think PageRank).
>
> The problem is that i think I am going to have to do this with my own
> subqueries or integrating directly into IndexSearcher while doing my own
> scoring. Hits.doc() is expensive to say the least (I am assuming it
> fetches all fields?) and it doesn't seem that there is a straight
> forward way to add a visitor that will be called to develop my own
> custom score.
>
> Anyone have any advice here?
>
> Kevin
>
> --
> Help Support NewsMonster Development! Purchase NewsMonster PRO!
>
> http://www.newsmonster.org/download-pro.html
>
> Kevin A. Burton, Location - San Francisco, CA, Cell - 415.595.9965
> AIM - sfburtonator, Web - http://www.peerfear.org/
> GPG fingerprint: 4D20 40A0 C734 307E C7B4 DCAA 0303 3AC5 BD9D 7C4D
> IRC - freenode.net #infoanarchy | #p2p-hackers | #newsmonster
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: lucene-user-help@jakarta.apache.org
>
>