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Hi, I?m trying to use Omega to index INEX dataset for Letor. But omindex told me these xml files are unknown. Olly told me I could tell omindex to handle them as HTML. (Thanks Olly :) ) Is it appropriate? Parth, could you give me some suggestions? Thank you! Jiarong Wei

On Tue, Mar 11, 2014 at 03:20:31PM +0100, Parth Gupta wrote: > > > > On current trunk, we index the title with prefix "S" by default in > > omindex, though with a wdf inc of 5 rather than 1: > > > > indexer.index_text(title, 5, "S"); > > > > So I don't think you need that change to omindex now. > > Yes, but please

Hi Parth, I?ve implemented SVMRanker class and also sorted out most of current Letor APIs. Now I?m trying to use INEX dataset to verify my implement. But I stuck in the indexing part. You said in the documentation that we have to add prefix when indexing. Also I notice that you set some metadata in omindex.cc of your version. But the omindex.cc has changed since 2011. I think that?s why my result

...text(title, 5, "S"); -> indexer.index_text(title, 1, "S"); if it does not then we should include that part in the patch too. I like to create a patch for xapian-letor for resolving common code of xapian. Cheers, Parth. On Wed, Mar 12, 2014 at 3:13 AM, Jiarong Wei <vcamx3 at gmail.com> wrote: > Thank you Parth and Olly! I'll try it :) > > Jiarong Wei > > On Mar 11, 2014, at 16:57, Olly Betts <olly at survex.com> wrote: > > > On Tue, Mar 11, 2014 at 03:20:31PM +0100, Parth Gupta wrote: > >>> > >>> On curre...

Hi all, Thank you for giving me the opportunity to work with Xapian :) I am Jiarong Wei, a third year undergraduate student in Zhejiang University, China. In GSoC 2014, I will work on Letor module with Hanxiao Sun. Here are some questions I encountered these days, 1. In letor.cc, we have two parts of functions: the training part and the ranking part. I?ll use SVMRanker as an example. The

Hi, I am Jiarong Wei (irc: VcamX). I?m a 3rd year computer science student at Zhejiang University, China. I?m very willing to contribute to Xapian as part of GSoC 2014. Now I?m at Simon Fraser University, Canada, as an exchange student. I?ll go back to China on the end of April. I think it doesn?t matter I?ll change the time zone :) From the list of project?s ideas, Learning to Rank interests me

Hi, I've read the code of letor module. And I have some questions about it: 1. In https://github.com/rishabhmehrotra/xapian/blob/master/xapian-letor/letor_internal.cc#L299, there is a write_to_file method, which save RankList into ?train.txt?. But the format for ?train.txt? is different from the one mentioned in http://trac.xapian.org/wiki/GSoC2011/LTR/Notes#QueryLevelNorm. And in

Thanks for your reply! For the third question: In https://inex.mmci.uni-saarland.de/data/documentcollection.jsp, I can find inex2010-article.qrels in 2010 assessment, but can?t find query files. Could you send me the link? I have registered on INEX website. And I also need to download ``INEX 2009 collection without annotation tags: (unofficial)`` on