similar to: Need info on chert and flint

Hi, What's the main difference between chert and flint? What above vs lucene? I am mainly asking about data structure (lexicon, posting list, document data), what's in memory, what's on disk, hash vs b-tree and reasons behind them. Any pointer is appreciated. Thanks! Crystal -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, I've a program which: 1. Sets XAPIAN_FLUSH_THRESHOLD=1000 2. Opens a (new) database for write 3. Indexes a few thousand documents 4. Periodically also does queries on the database With 1.1.4, with certain document sets (basically a particular mail folder of mine), Enquire.get_mset() sometimes (but not always) triggers a "RangeError: Value in posting list too

As Chert backend is not the default Xapian backend for the 1.2 branch, I am thinking about switching from Flint to Chert. However, I am wondering how do both compare in performance and index size? My indexes are updated quite frequently, so this is my priority. Which is better in this case? Regards, PK

The simple C code on which im running the allocator is attached. And these are the set of commands. I dont understand ..guess i might be doing something very silly. Please help *Commands:* clang -emit-llvm -c test.c -o test.bc opt -mem2reg test.bc -o testssa.bc llc -regalloc=pbqp testssa.bc On Mon, Aug 12, 2013 at 7:59 AM, David Blaikie <dblaikie at gmail.com> wrote: > > > >

Report by Eric Lindblad 30-09-2015 http://www.ericlindblad.blogspot.com The xapian-core-1.2.21 'ambiguous overload' error on the files /backends/brass/brass_check.cc and /backends/chert/chert_check.cc appear to be resultant of a bug reported in gcc-3.3.4, which was fixed for 3.4.2 [Sept. 6, 2004] and 3.5. Bug 16854 - streams missing "long long" specializations on Tru64

On Sun, Aug 11, 2013 at 12:36 AM, Smriti Jaiswal <jaiswal.smriti at gmail.com>wrote: > Hello Sir, > > Im trying to test run pbqp register allocator for small C programs. > > by > > llc -regalloc=pbqp -debug <bitcode of the file> > > It is giving me segmentation fault for even very simple programs having > loops or if statements. > Please tell me where

Report by Eric Lindblad 06-10-2015 http://www.ericlindblad.blogspot.com cf: http://permalink.gmane.org/gmane.comp.search.xapian.general/9885 modifications allowing for brass and chert to compile on SFU Interix 3.5 (modified) [code change not performance critical] /xapian-core-1.2.21/backends/brass/brass_check.cc /xapian-core-1.2.21/backends/chert/chert_check.cc #include <climits> +

Hi, I am facing some performance issue on xapian version 1.0.16. Can someone tell me how system configuration help to improve xapian performance. Guessing that re-indexing is taking time. Is there any performance improvement in later version ? What is performance for xapian on some particular system configuration ? Appreciate help for any pointer. thanks Smriti

Greetings, I've been wondering about the index format and backwards compatibility. We're using the dev version (for chert) and each svn up means that any indexes created prior to this revision cannot be read. Is this purely a cautious move to prevent errors, and, barring any obvious index format changes, can I safely force the current revision to read existing indexes? eg, by

Hello Sir, Im trying to test run pbqp register allocator for small C programs. by llc -regalloc=pbqp -debug <bitcode of the file> It is giving me segmentation fault for even very simple programs having loops or if statements. Please tell me where I'm going wrong. -- Regards, Smriti Jaiswal MTech Dept of Computer Science and Engg, IIT Kanpur -------------- next part --------------

I've some problems converting a xapian db, created with core 1.1.3 (using chert), to the new chert format. I'm using xapian-chert-update, compiled from the core-1.2.4. The conversion seems to run without errors: #./xapian-core-1.2.4/bin/xapian-chert-update old new postlist: Reduced by 33.3333% 16K (48K -> 32K) record: Size unchanged (8K) termlist: doesn't exist position: Size

Hello, I am looking for a documentation or an example to use the synonym function. I tried this db.add_synonym("omega","xapain"); and this works by adding the flag FLAG_AUTO_SYNONYMS. If i try to use the db.add_synonym("omega","xapain is search engine "); it fails why? Can xapian use synonym for Abbreviations like MBA => Master of business

---------- Forwarded message ---------- From: Saad Ahmed <ch.saad.ahmed at gmail.com> Date: 3 February 2015 at 21:10 Subject: Waiting for Reply regarding "TestCases Failure" To: Xapian Development <xapian-devel at lists.xapian.org> I have been waiting for reply regarding any further steps to take. Following are the outputs of commands that you asked me to run. All these

hi, i have attached a doc file..Is this graph can be plotted using R?Plz help regards, smriti

On Sat, Mar 25, 2017 at 06:36:25PM -0500, Ryan Cross wrote: > After upgrades my stack is now: > > Python 2.7 > Django 1.8 > Haystack 2.6.0 > Xapian 1.4.3. (latest xapian haystack backend with some modifications) > > Using the same rebuild command as below but with —batch-size=50000 > > The issue has now become one of performance. I am indexing 2.2 million >

Hello, I am a undergraduate student at DA-IICT,India pursuing Btech in Information and Communication Technology.Major field of my Research is Information Retrieval and Natural Language processing. xapain being an powerful Information retrieval library have attracted me towards implementing stuff learned in class for this project.I have worked on entity search on RDF data,SMS based FAQ

So, given what I've read in the documentation I would create a text file named document_database.txt that might have the following: remote 192.168.1.10:30000 chert /var/lib/xapian_database/segment1 remote 192.168.1.10:30000 chert /var/lib/xapian_database/segment2 remote 192.168.1.10:30000 chert /var/lib/xapian_database/segment3 etc. I would then in my PHP program open

Hi, w.r.t. http://trac.xapian.org/ticket/326 I'd like to try out some of the patches mentioned against my xapian svn trunk to see what kind of improvement can be realised. There are quite a few patches, so can I simply try them all top-to-bottom, or which of them are recommended (ie, I don't want to screw with the index format)? Thanks h

Hi, Could you please clarify a query regarding full text search in Xapain? I have installed LXRng (cross-referencer), which internally uses Xapain for text search. I am using CentOS 6 & have installed the following Xapian packages: $ yum list installed | grep -i xapian perl-Search-Xapian.x86_64 1.2.9.0-1.el6 @rpm-eprints-org-xapian perl-Search-Xapian-debuginfo.i686

Hi, I am trying to isntall Xapain. I run $./cofigure optionand then I rune make, but it echos following message in infinite loop. Is there anything wrong? How to correct? --------------------------------- /bin/sh ./libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I./common -I./include -Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wno-long-long