Problem 5 As mentioned in the BibliographicNotes, Hugin implements an approximation scheme that involves setting very small probabilities in the junction tree tables to zero, which in turns allows more compression to take place.

To turn on the approximation scheme, select Network
Network Properties

Compilation, then check the approximate optimization box.

As for the previous problem, select an example BN and perform an investigation of the effect of varying the approximation threshold on the belief updating, again using the KL divergence measure.

Causal reasoning