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Re-implementation of dynamic Bayesian networks.

Jan Pöppel requested to merge hbuschme:dbn-v2 into master

Created by: hbuschme

The commits of this pull request implement dynamic Bayesian networks in PRIMO. The implementation is compatible to the one in primo-legacy. More specifically the pull request adds:

  • Implementation for the structure of (2-TBN type) dynamic Bayesian networks.
  • Implementation of a generic abstract class for DBN inference methods.
  • Implementation of two similar inference mechanisms based on the “prior feedback” (Robert 1993, Computational, Statistics 8:279--294) principle, i.e., marginal posterior probabilities of transition variables at time-slice (t) become prior probabilities of transition variables at time-slice (t+1).
  • A function for loading DBN-specifications, and a JSON-based DBN-specification format.
  • A DBN example.

Furthermore, it contains:

  • A module containing PRIMO-specific exception types, currently PrimoError and StructureError.
  • A re-organisation of import statements (now relative imports are used where possible).
  • Renaming of the module to primo2.networks as it now contains two different kinds of networks.

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