Can I use this library for the ranking task?

[simsong]

From @TheEdoardo93 on October 20, 2017 9:9

Hi, I'm a computer science student based in Milan.
I want to know if I can use this library (especially, with the Python interface/wrapper) for the ranking task. I want to learn a ranking function in Learning to Rank style.
It is possible?

Thanks for the answer!

Copied from original issue: cjlin1#38

[simsong]

From @cjlin1 on October 20, 2017 10:38

Please check

http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/#large_scale_ranksvm

TheEdoardo93 writes:

Hi, I'm a computer science student based in Milan.
I want to know if I can use this library (especially, with the
Python interface/wrapper) for the ranking task. I want to learn
a ranking function in Learning to Rank style.
It is possible?

Thanks for the answer!

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thread.
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[simsong]

From @TheEdoardo93 on October 20, 2017 12:51

Thanks.

1. I see that this library is written in C/C++. Is there any available Python wrapper/binding?
2. So, this library doesn't permit to perform learning to rank task?

Thanks for your answer

Edoardo Casiraghi
edoardo.casiraghi.93@gmail.com

Il giorno 20 ott 2017, alle ore 12:38, cjlin1 notifications@github.com ha scritto:

Please check

http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/#large_scale_ranksvm

TheEdoardo93 writes:

Hi, I'm a computer science student based in Milan.
I want to know if I can use this library (especially, with the
Python interface/wrapper) for the ranking task. I want to learn
a ranking function in Learning to Rank style.
It is possible?

Thanks for the answer!

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[simsong]

From @cjlin1 on October 20, 2017 13:8

We don't but it should be easy to modify liblinear's python setting here..
TheEdoardo93 writes:

Thanks.
I see that this library is written in C/C++. Is there any
available Python wrapper/binding?

Thanks for your answer

Edoardo Casiraghi
edoardo.casiraghi.93@gmail.com

Il giorno 20 ott 2017, alle ore 12:38, cjlin1
notifications@github.com ha scritto:

Please check

http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/#large_scale_ranksvm

TheEdoardo93 writes:

Hi, I'm a computer science student based in Milan.
I want to know if I can use this library (especially, with
the
Python interface/wrapper) for the ranking task. I want to
learn
a ranking function in Learning to Rank style.
It is possible?

Thanks for the answer!

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[simsong]

From @TheEdoardo93 on October 23, 2017 8:4

Sorry, what do you mean by "modify liblinear's python setting here"?

1. Do I have to modify only the settings (so only the parameters to pass to the training model) or change the code of this library, i.e., implement a wrapper for ranking task?
2. The first step of generating the pair-wise combination of training examples, i.e., transforms a n-class ranking problem into a two-class classification problem, who do this step? This library or a code written by me?