Explain how we can use the em algorithm to accomplish this


Problem

Consider the problem of applying EM to parameter estimation for a variable X whose local probabilistic model is a noisy-or. Assume that X has parents Y1, . . . , Yk, so that our task for X is to estimate the noise parameters λ0, . . . , λk. Explain how we can use the EM algorithm to accomplish this task. Utilize the structural decomposition of the noisy-or node.

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Computer Engineering: Explain how we can use the em algorithm to accomplish this
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