PyMC

rdf:langString PyMC

rdf:langString PyMC

rdf:langString PyMC

rdf:langString PyMC Development Team

rdf:langString PyMC (formerly known as PyMC3) is a Python package for Bayesian statistical modeling and probabilistic machine learning which focuses on advanced Markov chain Monte Carlo and variational fitting algorithms.It is a rewrite from scratch of the previous version of the PyMC software.Unlike PyMC2, which had used Fortran extensions for performing computations, PyMC relies on Aesara, a Python library that allows to define, optimize, and efficiently evaluate mathematical expressions involving multi-dimensional arrays.From version 3.8 PyMC relies on ArviZ to handle plotting, diagnostics, and statistical checks. PyMC and Stan are the two most popular probabilistic programming tools.PyMC is an open source project, developed by the community and fiscally sponsored by . PyMC has been used to solve inference problems in several scientific domains, includingastronomy, epidemiology,molecular biology,crystallography,chemistry,ecologyand psychology.Previous versions of PyMC were also used widely, for example inclimate science,public health, neuroscience,and parasitology. After Theano announced plans to discontinue development in 2017, the PyMC team evaluated TensorFlow Probability as a computational backend, but decided in 2020 to take over the development of Theano.Large parts of the Theano codebase have been refactored and compilation through JAX and Numba were added.The PyMC team has released the revised computational backend under the name Aesara and continue the development of PyMC.