Pebl

From SysbioWiki

Pebl is a python library for learning the structure of Bayesian Networks given data. Pebl allows learning from both observational and interventional data and can handle missing values and latent (hidden) variables. Pebl happily runs in a grid or cluster environment (we use apple's Xgrid). Pebl comes with several learning algorithms and makes it easy to implement your own.

Pebl code and documents can be found at pebl's google code site.