Re: Modifying score based on tf and slop

unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > -- View this message in context: http://www.nabble.com/Modifying-score-based-on-tf-and-slop-tp23412168p24460573.html Sent from the Lucene - Java Users mailing list archive a

Re: Modifying score based on tf and slop

Thanks a lot Mark. Do Correct me if I am wrong. but what this means is tf does not really have the same meaning as it does in case of other queries. Also I think I understand better what hossman has told - in the sense that BC is there in two matching spans , which is why we get higher score - th

Re: Modifying score based on tf and slop

tf() is used, just not with the term freq - the length of the matching Spans is used instead. The terms from nested Spans will still affect the score (you still get IDF), but term freq is substituted with matching Span length. Also, boosts of nested Spans are ignored - only the top level boos

Re: Modifying score based on tf and slop

pans method directly on your SpanNearQuery and > iterate over them yourself, ignoring the ones you want to ignore. > > > > -Hoss > > > ---

Re: Modifying score based on tf and slop

(Disclaimer: i'm not currently looking at the code, this email is entirely a guess based on what i remember about SpanQueries) : II ) Using default implementation of tf in Similarity class: : : Case 1 - Doc : "AB BC BC CD" : Result : 4 - Actual score : % match : ( actual score / max possibl

Re: Modifying score based on tf and slop

> >> But this adversely affects 3) as the slop value is factored into the > >> tf ( as per what I can see in the span scorer) > >> > >> > >> How can I ensure the frequency of a certain term does not affect the > >> score while at the same ensur

Re: Modifying score based on tf and slop

the >> tf ( as per what I can see in the span scorer) >> >> >> How can I ensure the frequency of a certain term does not affect the >> score while at the same ensuring that the slop does affect it ? >> >> &g

Re: Modifying score based on tf and slop

Hey, On Thu, May 7, 2009 at 3:51 AM, Radha Sreedharan wrote: > Hi, > > I made tf return a 1.0f but the issue with that is that now the slop > factor is neglected. > > So even if the tow terms in the span near query or far off or nearby > the score returned is the same. > > I want the no of times o

Re: Modifying score based on tf and slop

Hi, I made tf return a 1.0f but the issue with that is that now the slop factor is neglected. So even if the tow terms in the span near query or far off or nearby the score returned is the same. I want the no of times of the term occurring to be neglected but not the slop. Radha On Thu, May 7

Re: Modifying score based on tf and slop

Hey, If I get you right you wanna make tf not affecting the score at all. if so why don't you just return 1.0f by overriding similarity? If you just wanna do that for the query you are using you could override Query#getSimilarity and return a delegate to the actual similarity. Hope that helps. si

Modifying score based on tf and slop

Hi all, All I have is a query running on a document with a single field which has some search value. This is all which will be present. No more documents / fields. I have the following specific requirements 1) Length of document should not affect score - Implemented as per lucene documentation u