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Project Description

Introduction

This is a library to assist with calculations for estimation problems using particle based methods, it contains a number of algorithms such as the Particle Filter, Auxiliary Particle Filter and support several variants of Particle Smoothing through the use of Backward Simulation (FFBSi) techniques but also methods such as the Metropolis-Hastings Backward Proposer (MHBP) and the Metropolis-Hastings Improved Particle Smoother (MHIPS).

It also provides a framework for doing parameter estimation in nonlinear models using Expectation Maximization combined with the particle smoothing algorithms presented above. (PS-EM).

The use of Rao-Blackwellized models is considered an importan special case and extensive support for it is provided.

The structure is based on presenting a number of interfaces that a problem specific class must implement in order to use the algorithms. To assisst the end user base classes for common model structures, such as Mixed Linear/Nonlinear Gaussian (MLNLG) models are provided to keep the implementation effort to a minimum.

The idea is to provide an easy prototyping enviroment for testing different algorithms and model formulations when solving a problem and to act as a stepping stone for a later more performance oriented problem specific implementation by the end user. (outside the scope of this framework)

Installation

Using PyPI

The package is hosted on PyPI, so on many system you can just run:

pip install pyParticleEst

Manual installation

Make sure that you have numpy and scipy installed After downloading the code (see link at top of this document) run:

python setup.py install

This will build the code and install it to your system using distutils.

Non-Linux systems

There is currently no binary distribution, thus you have to have a C-compiler on your system for distutils to build the C-extension modules. On Unix-like systems this normally isn’t an issue, but for Windows it may be a bit tricker. If compilation of the C code fails it will fall back to using pure python code, this is slower but should work on all platforms but will print a warning when using the library.

This link provides some advice on how to configure MinGW to compile on Windows.

http://eli.thegreenplace.net/2008/06/28/compiling-python-extensions-with-distutils-and-mingw

If you get an error “Unable to find vcvarsall.bat” you most likely don’t have a correctly configured compilation environment. Perhaps this link will be helpful:

http://stackoverflow.com/questions/2817869/error-unable-to-find-vcvarsall-bat

Release History

Release History

1.1.1

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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1.1

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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1.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.9

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pyParticleEst-1.1.1.tar.gz (137.3 kB) Copy SHA256 Checksum SHA256 Source Jan 9, 2017

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