Return-Path: Delivered-To: apmail-lucene-java-user-archive@www.apache.org Received: (qmail 83175 invoked from network); 24 May 2005 01:32:20 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199) by minotaur.apache.org with SMTP; 24 May 2005 01:32:20 -0000 Received: (qmail 3464 invoked by uid 500); 24 May 2005 01:32:14 -0000 Delivered-To: apmail-lucene-java-user-archive@lucene.apache.org Received: (qmail 3428 invoked by uid 500); 24 May 2005 01:32:13 -0000 Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: java-user@lucene.apache.org Delivered-To: mailing list java-user@lucene.apache.org Received: (qmail 3414 invoked by uid 99); 24 May 2005 01:32:13 -0000 X-ASF-Spam-Status: No, hits=1.7 required=10.0 tests=DNS_FROM_RFC_ABUSE,DNS_FROM_RFC_POST,MSGID_FROM_MTA_HEADER,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (hermes.apache.org: domain of louluqun@hotmail.com designates 64.4.54.103 as permitted sender) Received: from bay20-f14.bay20.hotmail.com (HELO hotmail.com) (64.4.54.103) by apache.org (qpsmtpd/0.28) with ESMTP; Mon, 23 May 2005 18:32:09 -0700 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 23 May 2005 18:32:06 -0700 Message-ID: Received: from 211.144.105.3 by by20fd.bay20.hotmail.msn.com with HTTP; Tue, 24 May 2005 01:32:05 GMT X-Originating-IP: [211.144.105.3] X-Originating-Email: [louluqun@hotmail.com] X-Sender: louluqun@hotmail.com In-Reply-To: <200505231933.40031@danielnaber.de> From: "luqun lou" To: java-user@lucene.apache.org Bcc: Subject: Re: how to chang lucene's default sort algorithm? Date: Tue, 24 May 2005 01:32:05 +0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 24 May 2005 01:32:06.0106 (UTC) FILETIME=[65059BA0:01C56000] X-Virus-Checked: Checked X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N >From: Daniel Naber >Reply-To: java-user@lucene.apache.org >To: java-user@lucene.apache.org >Subject: Re: how to chang lucene's default sort algorithm? >Date: Mon, 23 May 2005 19:33:40 +0200 > >On Monday 23 May 2005 15:30, luqun lou wrote: > > >         I am a beginner of IR.I want to use Lucene with BM25 > > algorithm,but i dont know how to change its default sort algorithm? > >Implement your own Similarity class derived from Similarity and activate it >using setSimilarity(mySmilarity). But the BM25 algorithm needs each document length and average document length,how can i get this numbers. i look at the indexreader class,it dont provide this number or interface? _________________________________________________________________ Don't just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/ --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org For additional commands, e-mail: java-user-help@lucene.apache.org