Question: 3. (14 points) In HW 4, we considered nuinc Buycs models, where thc observed dimensions 1, , D) are independent, conditioned on the class


3. (14 points) In HW 4, we considered nuinc Buycs models, where thc observed dimensions 1, , D) are independent, conditioned on the class z C {1, , K}. (a) (6 points) Draw a directed graph representing thc joint probability distribution over thc variables , .ED and z. There should be one node for each of thc D 1 variables. (b) (4 points) Write the joint distribution P(TI,... , xn, ' z) in terms of a product of condi- t,ional distributions, one for each node in the graph. (C) (4 points) Arc , independent? Why?
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