Metadata-Version: 2.1
Name: hydra-orion-sweeper
Version: 1.2.0
Summary: Hydra Orion Sweeper plugin
Home-page: https://orion.readthedocs.io/
Author: Pierre Delaunay
Author-email: pierre.delaunay@mila.quebec
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Operating System :: OS Independent
Classifier: Development Status :: 4 - Beta

Hydra Sweeper plugin for Orion
==============================

|pypi| |py_versions| |codecov| |docs| |tests| |style|

.. |pypi| image:: https://img.shields.io/pypi/v/hydra-orion-sweeper.svg
    :target: https://pypi.python.org/pypi/hydra-orion-sweeper
    :alt: Current PyPi Version

.. |py_versions| image:: https://img.shields.io/pypi/pyversions/hydra-orion-sweeper.svg
    :target: https://pypi.python.org/pypi/hydra-orion-sweeper
    :alt: Supported Python Versions

.. |codecov| image:: https://codecov.io/gh/Epistimio/hydra_orion_sweeper/branch/master/graph/badge.svg?token=40Cr8V87HI
   :target: https://codecov.io/gh/Epistimio/hydra_orion_sweeper

.. |docs| image:: https://github.com/Epistimio/hydra_orion_sweeper/actions/workflows/docs.yml/badge.svg?branch=master
   :target: https://epistimio.github.io/hydra_orion_sweeper/

.. |tests| image:: https://github.com/Epistimio/hydra_orion_sweeper/actions/workflows/test.yml/badge.svg?branch=master
   :target: https://github.com/Epistimio/hydra_orion_sweeper/actions/workflows/test.yml

.. |style| image:: https://github.com/Epistimio/hydra_orion_sweeper/actions/workflows/style.yml/badge.svg?branch=master
   :target: https://github.com/Epistimio/hydra_orion_sweeper/actions/workflows/style.yml


Provides a mechanism for Hydra applications to use Orion
algorithms for the optimization of the parameters of any experiment.

See `website <https://orion.readthedocs.io>`_ for more information


Install
-------

.. code-block:: bash

   pip install hydra-orion-sweeper


Search Space
------------

Orion defines 5 different dimensions that can be used to define your search space.

* ``uniform(low, high, [discrete=False, precision=4, shape=None, default_value=None])``
* ``loguniform(low, high, [discrete=False, precision=4, shape=None, default_value=None])``
* ``normal(loc, scale, [discrete=False, precision=4, shape=None, default_value=None])``
* ``choices(*options)``
* ``fidelity(low, high, base=2)``

Fidelity is a special dimension that is used to represent the training time, you can think of it as the ``epoch`` dimension.


Documentation
-------------

For in-depth documentation about the plugin and its configuration options
you should refer to `Orion <https://orion.readthedocs.io/en/stable/index.html>`_ as the plugin
configurations are simply passed through.

* `algorithm <https://orion.readthedocs.io/en/stable/user/algorithms.html>`_
* `worker <https://orion.readthedocs.io/en/stable/user/config.html#worker>`_
* `storage <https://orion.readthedocs.io/en/stable/user/config.html#database>`_
* `parametrization <https://orion.readthedocs.io/en/stable/user/searchspace.html>`_

Example
-------

.. code-block:: python

   defaults:
   - override hydra/sweeper: orion

   hydra:
   sweeper:
      params:
         a: "uniform(0, 1)"
         b: "uniform(0, 1)"

      orion:
         name: 'experiment'
         version: '1'

      algorithm:
         type: random
         config:
         seed: 1

      worker:
         n_workers: -1
         max_broken: 3
         max_trials: 100

      storage:
         type: legacy
         database:
            type: pickleddb
            host: 'database.pkl'

   # Default values
   a: 0
   b: 0


.. code-block:: python

   import hydra
   from omegaconf import DictConfig

   @hydra.main(config_path=".", config_name="config")
   def main(cfg: DictConfig) -> float:
      """Simple main function"""
      a = cfg.a
      b = cfg.b

      return float(a + b)

   if __name__ == "__main__":
      main()

