Corrected equation for sum-product message passing

ermongroup / cs228-notes

Course notes for CS228: Probabilistic Graphical Models.

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Corrected equation for sum-product message passing #141

Closed raunakkmr closed 5 years ago

raunakkmr commented 5 years ago

I think that the equation on line 50 in the BP and JT notes is missing a factor of $$\phi(x_i)$$. Since local single node potentials are included in the messages sent from $$x_k$$ to $$x_j$$ in the preceding equation, shouldn't we consider the local single node potential at node $$x_i$$ when computing its marginal?

ShengjiaZhao commented 5 years ago

Thanks for finding the typo!