Add documentation files

Author: pockerman

docs/source/API/actions.rst

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+actions
+=======
+
+.. automodule:: actions
+
+   
+   
+   
+
+   
+   
+   
+
+   
+   
+   .. rubric:: Classes
+
+   .. autosummary::
+   
+.. autoclass:: ActionBase
+   :members: __init__, act
+   
+.. autoclass:: ActionIdentity
+   :members: __init__, act
+   
+      ActionNumericBinGeneralize
+      ActionNumericStepGeneralize
+      ActionRestore
+
+.. autoclass:: ActionStringGeneralize
+   :members: __init__, act, add
+   
+      ActionSuppress
+      ActionTransform
+      ActionType
+   
+   
+
+   
+   
+   
+
+
+

docs/source/examples.rst

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+Examples
+========
+
+Some examples can be found below
+
+- `Qlearning agent on a three columns dataset <src/examples/qlearning_three_columns.py>`_
+- `N-step semi-gradient SARSA on  a three columns dataset <src/examples/nstep_semi_grad_sarsa_three_columns.py>`_

docs/source/index.rst

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+.. RL Anonymity (with Python) documentation master file, created by
+   sphinx-quickstart on Tue Feb 15 17:55:45 2022.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Welcome to RL Anonymity (with Python)'s documentation!
+======================================================
+
+An experimental effort to use reinforcement learning techniques for data anonymization. 
+
+Contents
+--------
+
+.. toctree::
+   :maxdepth: 2
+   
+
+   overview
+   install
+   examples
+   modules
+   
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
+

docs/source/install.rst

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+Installation
+============
+
+The following packages are required:
+
+- `NumPy <https://numpy.org/>`_
+- `Sphinx <https://www.sphinx-doc.org/en/master/>`_
+- `Python Pandas <https://pandas.pydata.org/>`_
+
+.. code-block:: console
+
+	pip install -r requirements.txt
+	
+
+Generate documentation
+======================
+
+You will need `Sphinx <https://www.sphinx-doc.org/en/master/>`_ in order to generate the API documentation. Assuming that Sphinx is already installed
+on your machine execute the following commands (see also `Sphinx tutorial <https://www.sphinx-doc.org/en/master/tutorial/index.html>`_). 
+
+.. code-block:: console
+
+	sphinx-quickstart docs
+	sphinx-build -b html docs/source/ docs/build/html
+
+
+

docs/source/modules.rst

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+API
+===
+
+.. toctree::
+   :maxdepth: 4
+   
+   API/actions
+   generated/action_space
+   generated/q_estimator
+   generated/q_learning
+   generated/trainer
+   generated/sarsa_semi_gradient
+   generated/exceptions
+   generated/action_space
+   generated/actions
+   generated/column_type
+   generated/discrete_state_environment
+   generated/observation_space
+   generated/state
+   generated/time_step
+   generated/tiled_environment
+

docs/source/overview.rst

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+Conceptual overview
+===================
+
+The term data anonymization refers to techiniques that can be applied on a given dataset, D, such that after
+the latter has been submitted to such techniques, it makes it difficult for a third party to identify or infer the existence
+of specific individuals in D. Anonymization techniques, typically result into some sort of distortion
+of the original dataset. This means that in order to maintain some utility of the transformed dataset, the transofrmations
+applied should be constrained in some sense. In the end, it can be argued, that data anonymization is an optimization problem
+meaning striking the right balance between data utility and privacy. 
+
+Reinforcement learning is a learning framework based on accumulated experience. In this paradigm, an agent is learning by iteracting with an environment 
+without (to a large extent) any supervision. The following image describes, schematically, the reinforcement learning framework .
+
+![RL paradigm](images/agent_environment_interface.png "Reinforcement learning paradigm") 
+
+The agent chooses an action, ```a_t```, to perform out of predefined set of actions ```A```. The chosen action is executed by the environment
+instance and returns to the agent a reward signal, ```r_t```, as well as the new state, ```s_t```, that the enviroment is in. 
+The framework has successfully been used  to many recent advances in control, robotics, games and elsewhere.
+
+
+Let's assume that we have in our disposal two numbers a minimum distortion, ```MIN_DIST``` that should be applied to the dataset
+for achieving privacy and a maximum distortion, ```MAX_DIST```,  that should be applied to the dataset in order to maintain some utility.
+Let's assume also that any overall dataset distortion in ```[MIN_DIST, MAX_DIST]``` is acceptable in order to cast the dataset as 
+preserving  privacy and preserving dataset utility. We can then train a reinforcement learning agent to distort the dataset
+such that the aforementioned objective is achieved.