Return-Path: Delivered-To: apmail-lucene-java-user-archive@www.apache.org Received: (qmail 6180 invoked from network); 17 Sep 2008 12:20:16 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 17 Sep 2008 12:20:16 -0000 Received: (qmail 26354 invoked by uid 500); 17 Sep 2008 12:20:08 -0000 Delivered-To: apmail-lucene-java-user-archive@lucene.apache.org Received: (qmail 25796 invoked by uid 500); 17 Sep 2008 12:20:06 -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 25784 invoked by uid 99); 17 Sep 2008 12:20:06 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Sep 2008 05:20:06 -0700 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [140.203.201.101] (HELO mx2.nuigalway.ie) (140.203.201.101) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Sep 2008 12:19:07 +0000 X-IronPort-AV: E=Sophos;i="4.32,415,1217804400"; d="scan'208";a="94775178" Received: from exbe2.ac.nuigalway.ie (HELO EVS1.ac.nuigalway.ie) ([10.132.157.13]) by mx2.nuigalway.ie with ESMTP; 17 Sep 2008 13:19:02 +0100 Received: from EVS1.ac.nuigalway.ie ([10.132.157.14]) by EVS1.ac.nuigalway.ie with Microsoft SMTPSVC(6.0.3790.3959); Wed, 17 Sep 2008 13:19:01 +0100 Received: from [10.2.18.102] ([140.203.154.11]) by EVS1.ac.nuigalway.ie over TLS secured channel with Microsoft SMTPSVC(6.0.3790.3959); Wed, 17 Sep 2008 13:19:01 +0100 Message-ID: <48D0F5B5.9000406@deri.org> Date: Wed, 17 Sep 2008 13:19:01 +0100 From: Renaud Delbru User-Agent: Thunderbird 2.0.0.16 (X11/20080724) MIME-Version: 1.0 To: java-user@lucene.apache.org Subject: Sorting posting lists before intersection Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 17 Sep 2008 12:19:01.0499 (UTC) FILETIME=[91758CB0:01C918BF] X-Virus-Checked: Checked by ClamAV on apache.org Hi all, I am wondering if Lucene implements the query optimisation that consists of ordering the posting lists based on the term frequency before intersection ? If yes, could somebody point me to the java class / method that implements such strategy ? Thanks in advance, Regards. -- Renaud Delbru --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org For additional commands, e-mail: java-user-help@lucene.apache.org