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Hi, guys: I found this project idea http://trac.xapian.org/wiki/GSoCProjectIdeas#Project:LearningtoRank If it is need to be improved, I will try to handle it thanks Regards -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20130923/d0ced0d6/attachment-0002.html>

*Or do you mean that it's one number per document whereas the other stats are per database, so it's harder to store it?* yes, I mean this. It's a huge data. If a new doclength list(contains all the doclength in a list, like chert) is added by myself, I am concern about: 1. This doclength list may be the bottlenect in this backend, http://trac.xapian.org/ticket/326 2. Change too much

...some compilation issues. Current improvements are needed to properly > put together everything the project contains, smooth compilation and test > cases. Then, some new ideas can be thought over. > > Regards, > Parth. > > > On Mon, Sep 23, 2013 at 3:37 AM, jiangwen jiang <jiangwen127 at gmail.com>wrote: > >> Hi, guys: >> >> I found this project idea >> http://trac.xapian.org/wiki/GSoCProjectIdeas#Project:LearningtoRank >> If it is need to be improved, I will try to handle it >> >> thanks >> Regards >> >> ________...

On Mon, Sep 02, 2013 at 09:21:48AM +0800, jiangwen jiang wrote: > TfIdfWeight and BM25(b=0) also need wdf_upper_bound, it is not exists in > Lucene backends. If you don't provide an implementation of wdf_upper_bound(), the default is to use the collection frequency of the term, so provided that information is available in the lucene files, the lack of wdf_upper_bound information

As Olly has already pointed out the 2012 branch is not merged. I think there are some compilation errors in the branch. The code in branch is better refactored. The Ranker and FeatureManager classes are well defined and implemented. Parth. On Wed, Sep 25, 2013 at 9:02 AM, Olly Betts <olly at survex.com> wrote: > On Tue, Sep 24, 2013 at 08:34:10PM +0800, jiangwen jiang wrote: >

...hat. > > calling i.get_docid() will help a lot! > > I will try to index for making reids = docid all the time. > > Best, > > De Lin > > > > ------------------------------ > > Message: 2 > Date: Tue, 5 Feb 2013 11:49:19 +0800 > From: jiangwen jiang <jiangwen127 at gmail.com> > Subject: [Xapian-devel] make error in xapian-application/omega > To: xapian-devel at lists.xapian.org > Message-ID: > <CAKsJTrkeAXix+F2=-- > PPM2PUpqGzsPPJR_i2TomH_mMOHPYHaw at mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1&qu...

Hi, all: I have wrote a demo patch for Backend for Lucene format indexes, Lucene version is 3.6.2. http://lucene.apache.org/core/3_6_2/fileformats.html Now, this demo patch just support the basic features in Lucene. Compound File(.cfs/.cfe)?term vector(.tvx/.tvd/.tvf) delete document(.del) are not supported, skip list in .fdx is not supported too example/quest.cc is used to test this demo.

Hi, guys, I wrote a patch for ticket #467<http://trac.xapian.org/ticket/467>(Add standard ExpandDecider subclass to restrict to terms with a particular prefix). A new ExpandDecider class is added in expanddecider.cc/h, which delete all unprefix terms I am a newbiee to open source contribution, please let me know if this patch is work. Patch is here(generate by svn diff):

Hi, all: I am confused with the concept of colletion_freq There's no informations about it on http://xapian.org/docs/glossary.html What does it means? Thanks Regards! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20130827/370cc6a3/attachment.html>

Hi, all: I check out the trunk code from svn yesterday *svn co svn://svn.xapian.org/xapian/trunk xapian* compile process: *./bootstrap* *mkdir build* *cd build* *../configure --disable-documentation* *make* then the error occur: cd xapian-applications/omega && make all make[1]: Entering directory `/home/white127/xapian-svn/build/xapian-applications/omega' /usr/bin/perl