Found the reason, it is a bug IMHO. The example should be:
A: term1^5 term2^6 term3^7 B: term1^5E-4 term2^6E-4 term3^7E-4 C: term1^0.0006 term2^0.0006 term3^0.0007 A & C suppose return the same rank B is different Since B will be parsed as: term1^5 E-4 term2^6 E-4 term3^7 E-4 The parser takes E-4 as another term. Can someone help to log it as a "parsing bug" if we consider it as a bug. Thanks. Charlie --- Wednesday, September 27, 2006, 4:49:11 PM, you wrote: > I assume you mean that the set of matches is hte same, but the scores (and > possibly the order) are different correct? > The IndexSearcher.explain methods should help make the reason clear -- > compare the output for each query when looking at the same docIds. > I suspect what you'll find is that with the low boost values, the > fieldNorms become more significant resulting in a change of order. > : Date: Wed, 27 Sep 2006 16:41:52 -0500 > : From: [EMAIL PROTECTED] > : Reply-To: java-user@lucene.apache.org, Charlie Zhao <[EMAIL PROTECTED]> > : To: java-user@lucene.apache.org > : Subject: strange behavior 4 query term boost > : > : Hello, > : > : I don't understand why the following two queries give totally different > results. > : > : term1^5 term2^6 term3^7 > : > : term1^0.0005 term2^0.0006 term3^0.0007 > : > : Can anyone explain? Thanks. > : > : (lucene2.0, using TopDocs) > : > : -- > : Thanks, > : Charlie --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
