Junction Tree Algorithm
نویسندگان
چکیده
In the previous scribes, we introduced general objects used in graphical models as well message passing schemes such as the sum-product algorithm and the max-sum algorithm for efficient computation of local marginals over subsets of the graph as well as the most probable state of the graph. For graphs which are trees, we noted that the algorithms are exact. In this article, we discuss a more flexible tool known as the junction tree algorithm which is used to compute local marginals of subsets of arbitrary graphs and yet still retains the property of being exact. The article draws largely from the exposition contained in Bishop[2], Lauritzen[4], Barber[1], and Wainwright and Jordan[5].
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