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Marginalize Product of Functions

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Silver_King

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Hi everyone,

I've a question in sorta of an advanced channel coding. The subject in specific is Marginalize Product of Functions as the title says.

I've this function:

\[f({x}_{1},{x}_{2},{x}_{3})=\frac{1}{K} g({x}_{1}) g({x}_{2}) g({1-x}_{3}) \delta{{x}_{2,}{x}_{1}} \delta{{x}_{2,}{1-x}_{3}}\]


I'm asked to:
1. Evaluate K.
2. Give a graphical representation to f.
3. Apply (step by step) message passing to marginalize with respect to each xi.


The first one I've already did it, and I came up with K=0.73. The second one I think I can do it, so I'm asking for help with 3. How can I start?
 

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