similar to: A beginner in "Posting list encoding improvements"

Hi, The size of the string generated by VSEncoder is 12592387, while that by InterpolativeEncoder is 8554817. When only encoding the first 1000lines, both cost 0ms to decode and VS cost 1ms to encode while Interpolative cost 0ms, 1000lines is just too little to catch the difference in my test. I upload the source code to https://github.com/HurricaneTong/Xapian/tree/master/VSEncoder The

On Wed, Feb 12, 2014 at 10:32:03PM +0800, Hurricane Tong wrote: > I seem to run into some trouble. > I succeeded in building the source code of Xapian in ubuntu, > but when I write a demo c++ application > > [snip] > I can't get it built. > > > hurricanetong at hurricanetong-VirtualBox:~/workspace$ g++ -L/usr/local/lib -lxapian-1.3 BuildIndexDemo.cpp Hmmm,

On 12 Feb 2014, at 08:55, Olly Betts <olly at survex.com> wrote: > For GSoC projects, I'd recommend developing on Linux, or another > Unix-like platform. I think everyone who has so far expressed an > interest in mentoring uses Linux or Mac OS X, so we're much better > placed to help with development on such platforms. If you're on Windows, the way of doing this

On 12 Feb 2014, at 14:58, "Hurricane Tong" <zhangshangtong.cpp at qq.com> wrote: > hurricanetong at hurricanetong-VirtualBox:~/workspace$ g++ `xapian-config --cxxflags --libs` BuildIndexDemo.cpp You want to use xapian-config-1.3 here, not xapian-config (which will be the installed version, not the trunk version you built). I've just built trunk (on Mac OS, admittedly),

Dear all: My name is Xudong Zhang, from Peking University. I'm very interested in the Project: Posting list encoding improvements, and I have had some experience on encoding, and so I want to be involved in the project. About the project?I have a question to consult: What's the main goal of the improvement of the speed for the encoding and decoding of posting lists? Is it OK to increase

I uninstall xapian1.3 and install xapian-1.2.17 but i still failed hurricanetong at hurricanetong-VirtualBox:~/workspace$ g++ `xapian-config --cxxflags --libs` demo2.cc /tmp/cc2wsfDJ.o: In function `main': demo2.cc:(.text+0x4a): undefined reference to `Xapian::WritableDatabase::WritableDatabase(std::basic_string<char, std::char_traits<char>, std::allocator<char> >

I think what i did is the same with you except i use make rather than make -sj8, and I did as root. And I do as you wrote again: root at hurricanetong-VirtualBox:/home/hurricanetong/xapian-1.2.17/xapian-core-1.2.17# ./configure [...] root at hurricanetong-VirtualBox:/home/hurricanetong/xapian-1.2.17/xapian-core-1.2.17# make -sj8 Making all in . Making all in docs Making all in tests root at

Le mar 18/05/10 12:10, emmanuel at engelhart.org a ?crit: > Le mar 18/05/10 11:49, "Charlie Hull" charlie at j > uggler.net a ?crit:> On 14/05/2010 18:29, Emmanuel Engelhart > wrote:> > -----BEGIN PGP SIGNED MESSAGE----- > > > Hash: SHA1 > > > > > > Le 14/05/2010 13:31, Charlie Hull a > ?crit> : > >> On 29/04/2010 08:22, Olly

Hi guys, I discovered xapian today and I'm trying it because it looks promising compared to other FTS engines. However I'm in a windows environment so it's a bit painful to set up as there is no official binaries. I've heard about http://www.flax.co.uk/xapian_binaries And I'm trying to build their latest release (1.2.8). After a few tries I manage to compile everything with

Le mar 18/05/10 11:49, "Charlie Hull" charlie at juggler.net a ?crit: > On 14/05/2010 18:29, Emmanuel Engelhart wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Le 14/05/2010 13:31, Charlie Hull a ?crit > : >> On 29/04/2010 08:22, Olly Betts > wrote: >>> I've uploaded Xapian 1.2.0 (including > Search::Xapian

Hi all, I wrote a program that implement the variable length encoding and fixed length encoding, and compares their index size and speed of search doc length. You can see the comparison result from the attachment snapshot. 1. The posting list is in all memory; 2. The search strategy of fixed length encoding is skipping with exponential step (1, 2, 4, 8, ...). Once exceeds the desired doc id, back

Hi Xapianers: My name is Weixian Zhou, Computer Science student of University at Buffalo, State University of New York. I am interested in the project of posting list encoding improvements and weighting schemes. I have some questions toward them. 1) After read the comments in brass_postlist.cc, I am still not very clear about the detailed structure of postings list. If you can provide some simple

I am willing to work for Xapian . I'm a fourth year undergraduate Student , I have done my elimentary course on machine learning algorithm . I am also familiar with C/C++ and basis Python,HTML,CSS,Javascript . Please suggest what all do I need to learn or read so as to start contributing to the open source community of Xapian . As an amateur and as per your free slots what project form the

Dear, guys: I am a beginner of Xapian, when reading the documents, I encountered follow questions. (1) I see the Xapian::Document has a method void add_value (Xapian::valueno valueno, const std::string &value) What's the purpose of this method? Document will related to the terms, but what's the purpose of this? (2) add_posting method will add term to a documents. void

Google are running their Summer of Code again this year. If you're not familiar with it, see: https://developers.google.com/open-source/gsoc/ Last year was very successful and I think we probably want to apply again this year, assuming there are a sufficient number of people interested in mentoring to make it worthwhile. Org application open on 19th (this Thursday) though the deadline is

Google are running their Summer of Code again this year. If you're not familiar with it, see: https://developers.google.com/open-source/gsoc/ We decided to apply a while back, but it's now time for orgs to actually apply - the deadline is just a few days away (Feb 20th). The main priorities right now are: * Refreshing the list of project ideas. I've done some cleaning up, but

Hi, Is there something wrong with lcov.xapian.org ? It seems my quassel client suddenly can't connect to it. ------------------ Shangtong Zhang,Second Year Undergraduate, School of Computer Science, Fudan University, China. -------------- next part -------------- An HTML attachment was scrubbed... URL:

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

Google's Summer of Code is happening again this year. If you're not familiar with GSoC, see: http://code.google.com/soc/ We decided to apply some time ago, but applications for orgs are now open and need to be in by this coming Friday (20th) so we need to get things a bit more organised. Accepted orgs are due to be announced on March 2nd, and students can apply between March 16th and

Hi, I was confronted with some trouble, I describe the trouble in my journal http://trac.xapian.org/wiki/GSoC2014/Posting%20list%20encoding%20improvements/Journal#May10 And corresponding code is in my git. Would you like to give me some help? ------------------ Shangtong Zhang,Second Year Undergraduate, School of Computer Science, Fudan University, China. -------------- next part