Christian Borgelt Rudolf Kruse Learning Graphical Models With Hypertree Structure Using a Simulated Annealing Approach. 135-138 2001 conf/fuzzIEEE/2001 FUZZ-IEEE db/conf/fuzzIEEE/fuzzIEEE2001.html#BorgeltK01 http://dx.doi.org/10.1109/FUZZ.2001.1007265