Revert "Trimmed the branch to only the bayesian_belief_networks sub directory"

This reverts commit 40b3a80c18f1d2d35de0bc1005cd71a60d24ce85.
Rebase from 'upstream'
Trimmed the branch to only the bayesian_belief_networks sub directory
Revert "Trimmed the branch to only the bayesian_belief_networks sub directory"

This reverts commit 9ec9834d99e7e452b8ad5b576a82c7d1b4a9c78b.
Rebase from 'upstream' (no changes)
Trimmed the branch to only the bayesian_belief_networks sub directory