search for: tradweight

Hello guys.As discussed on IRC,I have sent a pull request for a test for testing TradWeight with an Rset. On Fri, Mar 1, 2013 at 5:30 PM, <xapian-devel-request at lists.xapian.org>wrote: > Send Xapian-devel mailing list submissions to > xapian-devel at lists.xapian.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.xapia...

Hello guys. Olly had pointed out on IRC that there is no test for using the TradWeight scheme with a Rset and had directed me to the test coverage of the TradWeight scheme :- http://lcov.xapian.org/latest/weight/tradweight.cc.gcov.html I have added a test to api_anydb.cc which tests the TradWeight scheme using an Rset . I simply modified the rset2 test in api_anydb.cc so that the M...

Hey guys,Hi. :) I've corrected the mistakes in the TradWeight test commits that Olly pointed out and have added them to the pull request. Thank you for the feedback . -Regards -Aarsh -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20130304/f1b26c95/attachment.html&...

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.

Hey guys ,Hi :) I am working on a hack which will allow the user to specify a weighing scheme (along with the parameters , if he does not not want to use the default values) to build the Eset (rather than using the hard coded TradWeight scheme with default k=1 ) as Olly had suggested that we can probably get better terms (a more relevant Eset) for query expansion if we use say something like BM25 (or allow the user to use a self coded scheme) for ranking the terms . I read up the code for the proxy,internal and iterator classe...

...ncern about: 1. This doclength list may be the bottlenect in this backend, http://trac.xapian.org/ticket/326 2. Change too much above Lucene file format, then it's hard to compare performance between Xapian and Lucene Some ideas: 1. Using rank algorithm without doclength, such as BM25Weight or TradWeight without doclength, or tfidfWeight. If ranking results will be not good without doclength? 2. Stores doclength in .prx payload when doing Lucene indexing. https://lucene.apache.org/core/3_6_0/api/all/org/apache/lucene/index/Payload.html http://searchhub.org/2009/08/05/getting-started-with-p...

Hi, While searching for a project which matches my interest andskill level, I found this project named Matcher Optimization. This project is really challenging and excting from my view point and I would like to be a part of this project. Optimization techniques metioned in the reference links provided will take some time for me to have a good understanding about them. But I am trying to get my

...en I call Myweight scheme in my own c++ program, the compiler told me that "undefined reference to 'vtable for Xapian::Myweight'". I have checked all the virtual function include the destructor and all of them were re-implemented in Myweight.cc. Then I replace all the code about TradWeight by Myweight; and unfortunately all works well by calling "TradWeight" which actually is implemented Myweight scheme. I know it maybe not the problem of Xapian but my lack of C++ skills. It would be nice for all your answers. -- Ronghua Lin College of Computer Science and Technology, Z...

Dear Friends, This is Shao from National University of Singapore(NUS). I'm currently doing my exchange study in Royal Institute of Technology(KTH), Sweden. IR is really interesting to me. I've taken a Information Retrieval course during the exchange study here in KTH http://www.csc.kth.se/utbildning/kth/kurser/DD2476/ir12/labblydelser/assignment2. The Weighting Schemes and Learn to Rank

...nd add a new file tf_idf.cc in ../weight in the repo, to implement Tf_idfWeight. Here is the git diff patch: https://gist.github.com/2422049 I think the next thing to do is register this scheme to Xapian and write some test to see whether or not it works? I'm grepped the current BM25Weight, TradWeight and BoolWeight, and find clues about Enquire::set_weighting_scheme( ). But something more should be done to understand it. Best, Jiuding -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xapian.org/pipermail/xapian-devel/attachments/20120420/129e073...

...ian_w rap.cc:1661: undefined reference to `_PyInt_AsLong' .libs/xapian_wrap.o: In function `swig_varlink_repr': /cygdrive/d/AutomaticTextAnalysis-1.3-rc1/xapian-bindings/python/modern/xapian_w rap.cc:20297: undefined reference to `_PyString_FromString' Info: resolving vtable for Xapian::TradWeightby linking to __imp___ZTVN6Xapian10 TradWeightE (auto-import) Info: resolving vtable for Xapian::BM25Weightby linking to __imp___ZTVN6Xapian10 BM25WeightE (auto-import) collect2: ld returned 1 exit status make[4]: *** [_xapian.la] Error 1 make[4]: Leaving directory `/cygdrive/d/AutomaticTextAnalysis...

I am developping a personal/desktop search tool for which I am experimenting with doing no stemming during the indexing, but instead having a stem database (or several for different languages), used for expanding the query terms at search time. (ie: user query: flooring -> stem: floor -> final query for: [floored flooring floorings floors]) I have thought of a possible problem with

Hey guys hi.I am trying to understand how Xapian works .I read the Theoretical Background to Xapian doc and the report by Salton and Jones.I still cant seem to understand how Eset works How exactly does Xapian add terms to expand a query ? Assuming we have a list of the k most important terms, how do we decide which term to add to the query and will be in context with the query ? And to decide r

...Manifying blib/man3/Search::Xapian::ValueIterator.3pm Manifying blib/man3/Search::Xapian::Error.3pm Manifying blib/man3/Search::Xapian::DatabaseLockError.3pm Manifying blib/man3/Search::Xapian::RuntimeError.3pm Manifying blib/man3/Search::Xapian::TermIterator.3pm Manifying blib/man3/Search::Xapian::TradWeight.3pm Manifying blib/man3/Search::Xapian::DatabaseCorruptError.3pm Manifying blib/man3/Search::Xapian::BoolWeight.3pm Manifying blib/man3/Search::Xapian::DocNotFoundError.3pm Manifying blib/man3/Search::Xapian::LogicError.3pm Manifying blib/man3/Search::Xapian::Stem.3pm Manifying blib/man3/Search::Xa...

...weight/.libs/boolweight.o weight/.libs/coordweight.o weight/.libs/dlhweight.o weight/.libs/dphweight.o weight/.libs/ifb2weight.o weight/.libs/ineb2weight.o weight/.libs/inl2weight.o weight/.libs/lmweight.o weight/.libs/pl2plusweight.o weight/.libs/pl2weight.o weight/.libs/tfidfweight.o weight/.libs/tradweight.o weight/.libs/weight.o weight/.libs/weightinternal.o -lrpcrt4 -lz -lws2_32 -LD:/bda-ci/msys2/unstable/mingw64/lib/gcc/x86_64-w64-mingw32/6.3.0 -LD:/bda-ci/msys2/unstable/mingw64/lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/lib/../lib -LD:/bda-ci/msys2/unstable/mingw64/lib/gcc/...

...d.a/flint_postlist.o .libs/libxapian.lax/libbackend.a/quartz_record.o .libs/libxapian.lax/libbackend.a/quartz_metafile.o .libs/libxapian.lax/libbackend.a/inmemory_document.o .libs/libxapian.lax/libbackend.a/flint_document.o .libs/libxapian.lax/libmatcher.a/expand.o .libs/libxapian.lax/libmatcher.a/tradweight.o .libs/libxapian.lax/libmatcher.a/expandweight.o .libs/libxapian.lax/libmatcher.a/andmaybepostlist.o .libs/libxapian.lax/libmatcher.a/multimatch.o .libs/libxapian.lax/libmatcher.a/filterpostlist.o .libs/libxapian.lax/libmatcher.a/rset.o .libs/libxapian.lax/libmatcher.a/andnotpostlist.o .libs/libxa...