\input zb-basic \input zb-ioport \iteman{io-port 70696665} \itemau{Johnson, Jason K.; Chernyak, Vladimir Y.; Chertkov, Michael} \itemti{Orbit-product representation and correction of Gaussian belief propagation} \itemso{ICML, 60 (2009).} \itemcc{} \itemut{} \itemli{doi:10.1145/1553374.1553436} \end