search for: querylevelnorm

...ons 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 https://github.com/rishabhmehrotra/xapian/blob/master/xapian-letor/letor_internal_refactored.cc#L716, Qid and DocID become optional. What format should we use for ?train.txt?? Is there any sample ?train.txt? available? 2. In http://trac.xapian.org/wiki/GSoC2011/LTR/Notes#QueryLevelNorm, 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 https://github.com/rishabhmehrotra/xapian/blob/master/xapian-letor/letor_internal_refactored.cc#L716, Qid and DocID become optional. What format should we use for ?train.txt?? Is there any sample ?train.txt? available? > > > You can find a sample of training file in the resources...

Hi, Wanted to know if other normalization techniques like normalization by standard-deviation have been tried to normalize the Feature-list in Letor. Regards, Ayush Pandey.

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