similar to: ranking

Hello, I want to discuss my idea on ranking in IR system which I think can be good extension to Xapian. If I am not too late to discuss it then please consider it. I first give you brief background of me, I am a Masters student working on my thesis in the Information Retrieval. I today only got a mail from one of the professor from Europe whom i am going to join for Ph.D about GSoC and more

> > > I'd prefer to avoid adding things to the public API that don't get > used by end users. However because LTR is outside the Xapian build > tree, we can't easily give it privileged access to Xapian internals. > Sorry for a delayed response. The way I was thinking of performing reranking with updated weights was to add a class MSetRanker (basically containing a

Hi, I am Abhishek Currently Xapian::Weight follows BM25 scheme, many models such as the Divergence from Randomness (DfR) family of models, Unigram Language Model and the Bi-gram Language Model implemented two years ago in GSoc 2012 yet not merged to the master. The new weighing schemes or improvement in implementing the previous models to change the default scheme of BM25 from SMART with

Hi, I was reading an article recently about how google ranks results (among many other things of course) based on the proximity of the search terms in the source documents. In addition, the position of the search terms in the search query string itself is also taken into consideration when determining how important each term is. Does Xapian do something similar - at least for the first part?

Kevin Burton has posted about poor ranking in Lucene preferring shorter documents over longer ones[1]. A similar search in Xapian returns documents in the expected order: Performing query `Xapian::Query(foo)' 3 results found ID 3 99% [foo foo foo] ID 2 94% [foo foo] ID 1 80% [foo] Anyone know what Lucene is doing here? Their FAQ doesn't mention what weighting scheme they use, and I

Hi guys (and gals?), We're using Xapian/Omega for indexing and searching forums. As forums are, the content that is relevant to a search is not just determined by the frequency or location of the terms; the date the topic has been last modified is important as well. Another issue we find is that the amount of results is so overwhelming, the user is unable to find the correct topic for his

Hello, I am Mohiuddin Abdul Qader, final year student from dept of CSE in Bangladesh University of Engineering & Technology(BUET). My major was artificial intelligence & i finished my course on Machine Learning and Pattern Recognition this year. I am very keen to contribute in open source community. I have just completed my thesis on 'Location Based Structured Web Search'. For the

On Sun, Jul 31, 2016 at 12:44:16AM +0100, Olly Betts wrote: > Would a method which swapped two elements of an MSet provide what you > need? That would provide a more generic way to adjust the ranking of > an MSet which for example could be used to implement a diversification > feature or something like SQL "GROUP BY". Isn't the most common use going to be that the

Hello, I do not have any statistical background, So I shall apologise if I am asking trivial question or help. I am trying to work with R. The problem I have on hand is: I have 2 sets of data(means & SD for each sample in the group of both sets). The sample size is massive(2000+ in each grp). I have a new set of experimental data and I like to classify this to either of the grps based on

Hello Sir, I am a third-year student at the Department of mathematics at IIT Kharagpur. I have good experience in Information Retrieval and Machine Learning. I have read many chapters of the book Introduction to Information Retrieval. Recently I am doing a project on tagging a question on a Q&A Forum using ranking the tags and probabilistic inference. I also have software development

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

Dear Sir, I am Pankaj Singhal from Jaipur, India. I am very much interested and strongly looking forward in getting involved in this project Learning-to-Rank. My previous experience in this field is good. Last semester I did a similar job of ranking the URLs of the given huge dataset based on their attribute values. The dataset consisted hundreds of thousands of URLs and each url

HI, Parth: Thanks for your reply. There's xapian-letor folder in current master trunk, is this code merged in 2011? the letor code of 2012 is not merged to the trunk? Regards 2013/9/23 Parth Gupta <pargup8 at gmail.com> > Dear Jiangwen Jiang, > > The current state of the project can be reached from the repo: > http://trac.xapian.org/wiki/GSoC2012/LTR > > I would

Hello everyone, I am Abhiroop, 3rd year engineering student from BITS Pilani, India. I was going through the idea list of Xapian Search Engine Library and the idea Learning to Rank interested me. I am not very well conversant with C++. However I have done a lot of development work in Java and Python. And i have done a project in C# too. Currently I am working on 2 projects: 1.Distributed Data

As Olly has already pointed out the 2012 branch is not merged. I think there are some compilation errors in the branch. The code in branch is better refactored. The Ranker and FeatureManager classes are well defined and implemented. Parth. On Wed, Sep 25, 2013 at 9:02 AM, Olly Betts <olly at survex.com> wrote: > On Tue, Sep 24, 2013 at 08:34:10PM +0800, jiangwen jiang wrote: >

Hi, I have desire to contribute in GSOC 2012 open source development. I go through the GSOC 2012 projects details and it sounds to me an interesting project. I am interested in the following project: ? Weighting Schemes I have relevant experience as an open source C++ developer at Google. Inc USA, Warid Telecom UAE & Buraq Integrated Solutions (Australian based company). Firstly, I would

Hi, My name is Abraham and I am a 2nd year college student from Bangalore(India). I was going through your list of project ideas, and the Learning to Rank project really interested me . Unfortunately I don't really have any real experience with "Information Retrieval" and only know the basics of "Machine Learning". I was hoping that somebody could maybe point me in the

On Thu, May 25, 2023 at 05:18:28PM +0000, nebulaaksum wrote: > Here is what I tried: > 1. > gebreselema at system76-pc:~/myinstalls/myxapian/xapian-omega-1.4.22/xapianomegabuild$ ./configure XAPIAN_CONFIG=/usr/local/xapian-core-1.4.22/bin/xapian-config \--prefix=/usr/local/xapian-omega-1.4.22 > bash: ./configure: No such file or directory Looks like you've created a

Hello, My name is Sean Mikalson. I am a second year Software Engineering student with a combined degree in Philosophy. I am interested in participating with Xapian in GSOC this year and a couple of projects have initially caught my eye: - Dynamic Snippets - QueryParser Reimplementation I have good working knowledge in C/C++, Java and SQL (specifically Transact-SQL). In order to determine

hi, since quite some time already we provide rpms for xapian-core and xapian-omega at http://software.opensuse.org/download/server:/search/ The user documentation is at http://en.opensuse.org/Build_Service/User General informations about the build service can be found here: http://en.opensuse.org/Build_Service thanks for the great software. darix -- openSUSE - SUSE Linux is