similar to: Weighting Schemes

Hi All, I'm Sumith, a postgraduate student in Monash university. I'm working in the area of Text weighting schemes and Text Mining. When I'm going through the GSOC project list, I felt interested in the 'Weighting Schemes' project. At the moment, I have worked with different weighting schemes as TF-IDF and would love to join and contribute with my ideas in this project.

Hello guys.I am working on implementing the PL2 weighting scheme of the DFR framework by Gianni Amati. It uses the Poisson approximation of the Binomial as the probabilistic model (P), the Laplace law of succession to calculate the after effect of sampling or the risk gain (L) and within document frequency normalization H2(2) (as proposed by Amati in his PHD thesis). The formula for w(t,d) in

Hello Sir, I am Reetesh Ranjan, a 3rd year undergraduate student at the *INDIAN INSTITUTE OF TECHNOLOGY BHU, Varanasi-*one of the premier engineering colleges of India. I have gone through your webpage thoroughly and I am very interested in the work that you are undertaking on *Project: Weighting Schemes.*. I earnestly wish to work under your guidance, learn and progress through this experience.

Hello everyone! I'm Ayush Tomar, junior undergrad in Computer Science from New Delhi, India. I love C++ coding and working on machine learning and information retrieval project. I was exploring the GSoC ideas for Xapian and the project on "Adding Weighting Schemes" looked really interesting to me. I wanted to work on text mining/IR this summer and this idea seems perfect! I have

Hello Everyone, I am a second year graduate student at IIIT-Bangalore and my interest is in the field of Information Retrieval. I have successfully compiled Xapian from source and have implemented some examples. While going through the project list Weighting Schemes project is the one I was looking to contribute to. So i went through the xapian-core/weight where most of the schemes are already

Hi all, I have evaluated new weighting schemes along with their existing counterparts in Xapian to compare and see which one does better job. Also, I have put together all the results files for easy access here: https://github.com/ivmarkp/xapian-evaluation/tree/evaluation/run and a README for getting started with xapian-evaluation module. Hopefully, it might be of help to those who are new to

On Tue, May 03, 2016 at 07:56:19AM -0400, Alex Aminoff wrote: > Perhaps I am not understanding the basic concept, but I was figuring > we would just write a subclass of PostingSource in C++ that does > what we want, and not bother with the perl bindings. Is that not > possible? I realize that ideally we would develop the general > solution and share our code out to the community,

I was thinking about this some more: Is there a reason I can't just weight by some function of recency at indexing time? $weight = get_weight_based_on_recency(...); $tg->index_text($txt,$weight); If I wanted to allow the user the option of searching either in recency-weighted mode or not, I could index each document into 2 different databases, one with and one without. This avoids

> Hi, Vivek — there isn't any particular reason that I'm aware of. It's > probably worth pointing (in the omegascript documentation) to the part of > the getting started guide which talks about the different weighting schemes If there isn't any reason then I'd like to send in a patch adding support for those weighting schemes in weight.cc and I agree omegascript

Hello everyone, I have been working on adding support for BM25+ weighting function from the last couple of weeks. Initially, I considered modifying bm25weight.cc to add support for BM25+ function without disturbing functionalities of BM25. But that didn't work out very well. A day or two was spent trying to refactor and debug the same code. Later, I took another approach following the

Hi, I have added support for Piv normalization in Tf-Idf weighting scheme as a intermediate step to implementing the support for Piv+ normalization. All tests pass. But I'm running into some issues with Piv+ normalization. In the Piv+ formula , there are two parameters (s and delta) that control the weight assigned. I think the way I'm serialising and unserialising these parameters has

On Sat, Apr 08, 2017 at 09:11:22PM +0100, James Aylett wrote: > On 8 Apr 2017, at 19:15, Vivek Pal <vivekpal.dtu at gmail.com> wrote: > > >> and the details of which weighting schemes were available in which version > >> isn't a key part of the $set command itself. > > > > Do you suggest dropping that piece of information out? Since the reason behind

Hi, In my explorations of Omega codebase, I have found that Omega is currently missing support for newer weighting schemes added in 1.4.1 (BM25+, PL2+, Dir+). I'd submit a PR addressing that but as I think I might be missing something so just wanted to check if there's a particular reason for that? P.S. Finally back after a long week. Been eagerly waiting for a weekend since the

On Mon, Apr 10, 2017 at 11:47:36PM +0530, Vivek Pal wrote: > > No, use Xapian::Registry to find the weighting scheme from the name > > like how Weight::unserialise() does (otherwise every caller would need > > code similar to that above). > > Okay, I looked into Xapian::Registry and it seems you are referring to using > the get_weighting_scheme method? (which expects a

Hello, My name is Santiago Pina and I am currently studying two BSc(Hon) simultaneously ; one in Computer Science and the other in Mathematics as part of a pilot project at Universidad de Murcia. I am very excited to contribute in open source community through the platform of Google Summer of Code 2011. I was interested in the Weighting Schemes project and in the Matcher Optimisations project,

Hi James, Thanks for clearing doubts I had earlier. >>if we can introduce the variants using optional parameters that default to >>(effectively) 'off' that might be better than distinct ones, Yes, this will definitely be the better approach for introducing the variants of existing weighting functions. Thanks for the suggestion. Next, I will try to come up with a draft of

Hello all, I am very sorry I did not include xapian-devel mailing list in my previous mail. Thanks for responding my mail. Mohd Azeem NIT UK ________________________________ From: Olly Betts <olly at survex.com> To: Mohd Azeem <azeem201001 at yahoo.in> Cc: Parth Gupta <parthg.88 at gmail.com> Sent: Saturday, 31 March 2012 11:40 AM Subject: Re: GSoC, Xapian Project Weighting

Hello, I have submitted my proposal for "Weighting Schemes" . if you get some time to read my proposal, I will appreciate your suggestions about it. Proposal link: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2012/azeembt10cse/1 Thank you with Regards, Mohd Azeem NIT Uttarakhand -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I have updated my proposal for "project weighting schemes", If you get some time to read my proposal, I will appreciate your suggestions about it. proposal link: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2012/azeembt10cse/1 Thank you with regards, Mohd Azeem NIT Uttarakhand -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, guys I am Wenjin from Graduate School of Chinese Academy of Science, pursing a master degree and my current research interests including using Data mining and Information retrieve technology to analysis software engineering (SE) data and support SE. I have great interested in "Weight Schemes" project. and in the last few days I have learnt some detail about DFR model family by