“…Since the hierarchical Markov network has many advantages over the Markov network representation [15], and given the explanation of the favorable experimental results at the end of Section 4, we feel that the hierarchical Markov network representation could eventually become the standard representation of Bayesian networks. Thus, the encouraging results reported in this paper are useful to any work applying BNs, including traditional information retrieval [2,7,10,16], web search [9], user profiling [11], multi-agents [5,12,17] and e-commerce [4].…”