.. ULTRA documentation master file, created by
   sphinx-quickstart on Mon May 28 16:40:41 2018.
   You can adapt this file completely to your liking, but it should at least
   contain the root `toctree` directive.

Welcome to ULTRA's documentation!
====================================

`Edit on Github <https://github.com/ULTR-Community/ULTRA>`_

.. image:: ../../docs/structure.png
   :alt: structure
   :align: center

ULTRA is a toolkit for unbiased/online learning to rank algorithms. It was developed with a focus on facilitating the designing, comparing and sharing of unbiased/online learning to rank algorithms. There are a number of unbiased/online learning to rank algorithms, such as IPWrank, DLA, RegressionEM, DBGD, PDGD, and PairwiseDebias, designed with a unified interface. It also have a number of ranking models that support gradient descent optimizations, such as DNN, linear regression, DLCM, GSF, and SetRank. We are always happy to receive any code contributions, suggestions, and comments. 


.. toctree::
   :maxdepth: 3
   :caption: Contents:

   modules
   input_layer_reference
   learning_algorithm_reference
   ranking_model_reference


Indices and tables
==================

* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`