Hidden Markov Models in PyMC3
Project description
PyMC3 HMM
Hidden Markov models in PyMC3.
Features
- Fully implemented PyMC3
Distributionclasses for HMM state sequences (DiscreteMarkovChain) and mixtures that are driven by them (SwitchingProcess) - A forward-filtering backward-sampling (FFBS) implementation (
FFBSStep) that works with NUTS—or any other PyMC3 sampler - A conjugate Dirichlet transition matrix sampler (
TransMatConjugateStep) - Support for time-varying transition matrices in the FFBS sampler and all the relevant
Distributionclasses
To use these distributions and step methods in your PyMC3 models, simply import them from the pymc3_hmm package.
See the examples directory for demonstrations of the aforementioned features. You can also use Binder to run the examples yourself.
Installation
Currently, the package can be installed via pip directly from GitHub
$ pip install git+https://github.com/AmpersandTV/pymc3-hmm
Development
First, pull in the source from GitHub:
$ git clone git@github.com:AmpersandTV/pymc3-hmm.git
Afterward, you can run make conda or make venv to set up a virtual environment. After making changes, be sure to run make black in order to automatically format the code and then make check to run the linters and tests.
License
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