On java-user a question about "term frequency normalization" and changing Similarity appeared, too.
Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Grant Ingersoll [mailto:gsing...@apache.org] > Sent: Tuesday, February 03, 2009 10:59 PM > To: java-dev@lucene.apache.org > Subject: Re: [jira] Commented: (LUCENE-1534) idf(t) is not actually > squared during scoring? > > We should probably have that discussion (changing default Sim) on java- > dev, not on a particular JIRA issue. I, for one, am interested in > having the discussion. > > > On Feb 3, 2009, at 3:35 PM, Doug Cutting (JIRA) wrote: > > > > > [ https://issues.apache.org/jira/browse/LUCENE- > 1534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment- > tabpanel&focusedCommentId=12670103 > > #action_12670103 ] > > > > Doug Cutting commented on LUCENE-1534: > > -------------------------------------- > > > > Now, on the cusp of 3.0, might be a good time to think about > > changing the default ranking algorithm. This is potentially a > > disruptive change, but we can easily provide a back-compatible > > Similarity implementation. Are there other changes to the default > > Similarity that may be of general utility? Or do folks thinks its > > better to leave this alone? > > > >> idf(t) is not actually squared during scoring? > >> ---------------------------------------------- > >> > >> Key: LUCENE-1534 > >> URL: https://issues.apache.org/jira/browse/LUCENE-1534 > >> Project: Lucene - Java > >> Issue Type: Bug > >> Components: Query/Scoring > >> Affects Versions: 2.1, 2.2, 2.3, 2.3.1, 2.3.2, 2.4 > >> Reporter: Michael McCandless > >> Assignee: Michael McCandless > >> Priority: Minor > >> Fix For: 2.9 > >> > >> > >> The javadocs for Similarity: > >> > http://lucene.apache.org/java/2_4_0/api/org/apache/lucene/search/Similarit > y.html > >> show idf(t) as being squared when computing net query score. But I > >> don't think it is actually squared, in looking at the sources? Maybe > >> it used to be, eg this interesting discussion: > >> http://markmail.org/message/k5pl7scmiac5wosb > >> Or am I missing something? We just need to fix the javadocs to take > >> away the "squared"... > > > > -- > > This message is automatically generated by JIRA. > > - > > You can reply to this email to add a comment to the issue online. > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-dev-h...@lucene.apache.org > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-dev-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
