Return-Path: Delivered-To: apmail-lucene-java-user-archive@www.apache.org Received: (qmail 96835 invoked from network); 13 Mar 2010 12:40:18 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 13 Mar 2010 12:40:18 -0000 Received: (qmail 96346 invoked by uid 500); 13 Mar 2010 12:39:37 -0000 Delivered-To: apmail-lucene-java-user-archive@lucene.apache.org Received: (qmail 96301 invoked by uid 500); 13 Mar 2010 12:39:36 -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 96292 invoked by uid 99); 13 Mar 2010 12:39:36 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 13 Mar 2010 12:39:36 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of rcmuir@gmail.com designates 209.85.222.178 as permitted sender) Received: from [209.85.222.178] (HELO mail-pz0-f178.google.com) (209.85.222.178) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 13 Mar 2010 12:39:28 +0000 Received: by pzk8 with SMTP id 8so1947118pzk.29 for ; Sat, 13 Mar 2010 04:39:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:content-type :content-transfer-encoding; bh=30too+/xAuOCm1rHd6AabpCC0UHTR7f4qo1aZbuee2k=; b=wimJGdsV2efMLAevmdyUyqgyI4WewFwXZCfwdb8KHl1GayEawL7mnHHAgsrlDKZMGl PXet05n28e0zKmUubuPiN/R73mdUBw6isCjdyxdstABbOXWWaEePeGrJDlEzsOCmM69/ UCe79simhSyGvVI3B0Dp3TWt2P7X9/WFWn8TY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; b=q3gHLi+UHG3qq15byK/wWonu4U+z9HZryYpwGiS6vYIp+CKeRPoOTelqbHP5+DFFTk a2mDWE6SkcJr/nO53eysCqG72+u5mgtqDmUICcIDQZoPYx2S9rOFS2ovC0bNkrhdvCUu nJDsGkHm+ZTWUjdy5KEbv1BhcBwkxEQawTFkM= MIME-Version: 1.0 Received: by 10.115.114.29 with SMTP id r29mr3659637wam.142.1268483947092; Sat, 13 Mar 2010 04:39:07 -0800 (PST) In-Reply-To: <884383.22849.qm@web113308.mail.gq1.yahoo.com> References: <884383.22849.qm@web113308.mail.gq1.yahoo.com> From: Robert Muir Date: Sat, 13 Mar 2010 07:38:47 -0500 Message-ID: <8f0ad1f31003130438o38f2854avbbd14b36ae8f8a5c@mail.gmail.com> Subject: Re: TREC-3 Runs To: java-user@lucene.apache.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Virus-Checked: Checked by ClamAV on apache.org On Fri, Mar 12, 2010 at 11:01 AM, Ivan Provalov wrote: > Just to follow up on our previous discussion, here are a few runs in whic= h we have tested some of the Lucene different scoring mechanisms and other = options. =C2=A0We used Lucene's patches for LnbLtcSimilarity and BM25 and c= ontrib module for the SweetSpotSimilarity. > > Lucene Default: 0.149 > Lucene BM25: =C2=A0 =C2=A00.168 > SweetSpotSimilarity (Min: 10; Max: 1000; Steepness: 0.2): 0.173 > LnbLtcSimilarity (Pivot Norm + TF Default; Avg # of Terms: 450; slope: 0.= 25): =C2=A0 0.184 > LnbLtcSimilarity (Pivot Norm + TF Log; Avg # of Terms: 450; slope: 0.25):= =C2=A0 =C2=A0 =C2=A0 0.186 > Lucene With Stemmer: 0.202 > Lucene With Lexical Affinities + Phrase Expansion + Stemmer: 0.21 Ivan, thanks for reporting back. Its more evidence that its worth our trouble to support additional scoring models. --=20 Robert Muir rcmuir@gmail.com --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org For additional commands, e-mail: java-user-help@lucene.apache.org