Metadata-Version: 2.1
Name: PyDTMC
Version: 5.6.0
Summary: A framework for discrete-time Markov chains analysis.
Home-page: https://github.com/TommasoBelluzzo/PyDTMC
Author: Tommaso Belluzzo
Author-email: tommaso.belluzzo@gmail.com
Maintainer: Tommaso Belluzzo
Maintainer-email: tommaso.belluzzo@gmail.com
License: MIT
Project-URL: Bug Tracker, https://github.com/TommasoBelluzzo/PyDTMC/issues
Description: 
        PyDTMC is a full-featured, lightweight library for discrete-time Markov chains analysis. It provides classes and functions for creating, manipulating and simulating markovian stochastic processes.
        
        ## Requirements
        
        PyDTMC supports only `Python 3` and the minimum required version is `3.6`. In addition, the environment must include the following libraries:
        
        * [Matplotlib](https://matplotlib.org/)
        * [NetworkX](https://networkx.github.io/)
        * [Numpy](https://www.numpy.org/)
        * [SciPy](https://www.scipy.org/)
        
        For a better user experience, it's recommended to install [Graphviz](https://www.graphviz.org/) and [pydot](https://pypi.org/project/pydot/) before using the `plot_graph` function.
        In order to build the project documentation, it's necessary to install [Sphinx](https://www.sphinx-doc.org/).
        In order to perform unit tests, it's necessary to install [pytest](https://pytest.org/).
        
        
        ## Installation & Upgrade
        
        [PyPI](https://pypi.org/):
        
        ```sh
        $ pip install PyDTMC
        $ pip install --upgrade PyDTMC
        ```
        
        [GitHub](https://github.com/):
        
        ```sh
        $ pip install git+https://github.com/TommasoBelluzzo/PyDTMC.git@master#egg=PyDTMC
        $ pip install --upgrade git+https://github.com/TommasoBelluzzo/PyDTMC.git@master#egg=PyDTMC
        ```
        
        ## Usage
        
        The core element of the library is the `MarkovChain` class, which can be instantiated as follows:
        
        ```console
        >>> p = [[0.2, 0.7, 0.0, 0.1], [0.0, 0.6, 0.3, 0.1], [0.0, 0.0, 1.0, 0.0], [0.5, 0.0, 0.5, 0.0]]
        >>> mc = MarkovChain(p, ['A', 'B', 'C', 'D'])
        >>> print(mc)
        
        DISCRETE-TIME MARKOV CHAIN
         SIZE:           4
         RANK:           4
         CLASSES:        2
          > RECURRENT:   1
          > TRANSIENT:   1
         ERGODIC:        NO
          > APERIODIC:   YES
          > IRREDUCIBLE: NO
         ABSORBING:      YES
         REGULAR:        NO
         REVERSIBLE:     NO
        ```
        
        Below a few examples of `MarkovChain` instance properties and static computations:
        
        ```console
        >>> print(mc.is_ergodic)
        False
        
        >>> print(mc.recurrent_states)
        ['C']
        
        >>> print(mc.transient_states)
        ['A', 'B', 'D']
        
        >>> print(mc.steady_states)
        [array([0.0, 0.0, 1.0, 0.0])]
        
        >>> print(mc.is_absorbing)
        True
        
        >>> print(mc.fundamental_matrix)
        [[1.50943396 2.64150943 0.41509434]
         [0.18867925 2.83018868 0.30188679]
         [0.75471698 1.32075472 1.20754717]]
         
        >>> print(mc.kemeny_constant)
        5.547169811320755
        
        >>> print(mc.mean_absorption_times())
        [4.56603774 3.32075472 3.28301887]
        
        >>> print(mc.absorption_probabilities())
        [1.0 1.0 1.0]
        
        >>> print(mc.entropy_rate)
        0.0
        ```
        
        Dynamic computations on `MarkovChain` instances can be performed through their parametrized methods:
        
        ```console
        >>> print(mc.expected_rewards(10, [2, -3, 8, -7]))
        [-2.76071635, -12.01665113, 23.23460025, -8.45723276]
        
        >>> print(mc.expected_transitions(2))
        [[0.085, 0.2975, 0.0,    0.0425]
         [0.0,   0.345,  0.1725, 0.0575]
         [0.0,   0.0,    0.7,    0.0   ]
         [0.15,  0.0,    0.15,   0.0   ]]
        
        >>> print(mc.first_passage_probabilities(5, 3))
        [[0.5, 0.0,    0.5,    0.0   ]
         [0.0, 0.35,   0.0,    0.05  ]
         [0.0, 0.07,   0.13,   0.045 ]
         [0.0, 0.0315, 0.1065, 0.03  ]
         [0.0, 0.0098, 0.0761, 0.0186]]
         
        >>> print(mc.hitting_probabilities([0, 1]))
        [1.0, 1.0, 0.0, 0.5]
         
        >>> print(mc.walk(10))
        ['B', 'B', 'B', 'D', 'A', 'B', 'B', 'C', 'C', 'C']
        ```
        
        Plotting functions can provide a visual representation of `MarkovChain` instances; in order to display function outputs immediately, the [interactive mode](https://matplotlib.org/stable/users/interactive.html#interactive-mode) of `Matplotlib` must be turned on:
        
        ```console
        >>> plot_eigenvalues(mc)
        ```
        
        ![Eigenplot](https://i.imgur.com/ARWWG7z.png)
        
        ```console
        >>> plot_graph(mc)
        ```
        
        ![Graphplot](https://i.imgur.com/looxKRO.png)
        
        ```console
        >>> plot_walk(mc, 10, 'sequence')
        ```
        
        ![Walkplot](https://i.imgur.com/oxjDYr3.png)
        
Keywords: analysis chain fitting markov models plotting probability process random simulation stochastic
Platform: any
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Intended Audience :: Education
Classifier: Intended Audience :: Science/Research
Classifier: License :: OSI Approved :: MIT License
Classifier: Natural Language :: English
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Topic :: Education
Classifier: Topic :: Scientific/Engineering :: Artificial Intelligence
Classifier: Topic :: Scientific/Engineering :: Information Analysis
Classifier: Topic :: Scientific/Engineering :: Mathematics
Classifier: Topic :: Scientific/Engineering :: Physics
Classifier: Topic :: Software Development :: Libraries
Requires-Python: >=3.6
Description-Content-Type: text/markdown
Provides-Extra: all
Provides-Extra: test
