Re: Boost/Scoring question

2007-02-02 Thread Antony Bowesman
Thanks a lot for your answers Hoss. This list is really well supported! Antony Chris Hostetter wrote: : It's the index time boost, rather than query time boost. This short example : shows the behaviour of searches for A... index boosts! ... totally didn't occur to me that was what you we

Re: Boost/Scoring question

2007-02-01 Thread Chris Hostetter
: It's the index time boost, rather than query time boost. This short example : shows the behaviour of searches for A... index boosts! ... totally didn't occur to me that was what you were talking about. Yes: it makes sense that if you give a field an index boost of 0.0f you won't be able t

Re: Boost/Scoring question

2007-02-01 Thread Antony Bowesman
Hi Chris, : If I search for a document where the field boost is 0.0 then the document is not : found I just search that field. Is this expected??? you mean you search on: A^0and get no results even though documents contain A, and if you search on: +A^0 B^1 you see those d

Re: Boost/Scoring question

2007-01-31 Thread Chris Hostetter
: Thanks for the comments. Where I was trying to get to was whether a match on a : field with boost of 0.0 can ever cause the normalised score to result in 0 if : there is also a match on a field with a non zero boost. I'm not sure I : understand the scoring formula :( well .. it gets more com

Re: Boost/Scoring question

2007-01-30 Thread Antony Bowesman
Chris Hostetter wrote: 1) you can never compare the score from a Hits object with the score from an Explanation. Explanation has the raw score, Hits has the psuedo-normalized score. Thanks for the comments. Where I was trying to get to was whether a match on a field with boost of 0.0 can eve

Re: Boost/Scoring question

2007-01-30 Thread Chris Hostetter
: I added a single document with two fields, one with the default boost and : another with a boost of 0.0F. hits.score(0) = 0.10848885, but Explanation shows: : : 0.0 = match required 1) you can never compare the score from a Hits object with the score from an Explanation. Explanation has the

Boost/Scoring question

2007-01-30 Thread Antony Bowesman
Hi, In trying to understand scoring and boosting a bit better, I tried setting a boost of 0.0F for a field. As it's used as a multiplier, I wanted to see how it affects score. I added a single document with two fields, one with the default boost and another with a boost of 0.0F. hits.score

Boost/Scoring Question

2005-03-10 Thread Luke Shannon
Hello; This may be a trivial questions, but it has me stuck. I'm getting some really small scores: 8.799379E-4 I need to figure out why they are so small. I think it is problem which can be resolved using boosting. I'm not sure how to boost given the system I have. The fields I query against