[ngriffiths]

Thanks for sharing this - saving this paper too (from link in the github page): https://people.ee.ethz.ch/~loeliger/localpapers/FactorGraphs...

I'm not familiar with these techniques at all but seems like they have a ton of useful applications.

[nextos]

Factor graphs are well discussed in David Barber's excellent free BRML book: http://web4.cs.ucl.ac.uk/staff/D.Barber/textbook/140324.pdf

Judea Pearl described it as an excellent Bayesian textbook. There's a free solutions book and everything is also implemented.