RE: Similarity for Span and Boolean query

Hi, Chris, Thanks. Does this page provides the right equation for span query based similarity? http://xtf.sourceforge.net/docs/underHood.html#Scoring Jianhan -Original Message- From: Chris Hostetter [mailto:[EMAIL PROTECTED] Sent: 08 January 2007 08:20 To: java-user@lucene.apache.org S

Similarity for Span and Boolean query

Hi, all, The equation for similarity is given on this web page: http://lucene.apache.org/java/docs/api/org/apache/lucene/search/Similari ty.html I would like to know what are the equations for similarity if the query is a span or boolean query. Jianhan

RE: implementing our own Scorer (BM25)

Hi, we are having a discussion in java-dev@lucene.apache.org about implementing probabilistic language modelling approaches such as BM25 in Lucene. Hope you can join us there. Jianhan -Original Message- From: beatriz ramos [mailto:[EMAIL PROTECTED] Sent: 19 October 2006 16:36 To: java-u

Implementation of BM25 in Lucene

Hi, I have seen previous discussions on the implementation of BM25 in Lucene, and still do not know the current progress on this. Could anybody give me some guidance on this? Such as some work has been done or where to start working on this. Thanks! Jianhan