Hello,
Normally we say, that if a RV X is independent of another RV Y, then p(X,Y) = P(X/Y) p(Y) = P(X) p(Y).
Why is it then not correct to "to say X | Z | Y ? Is it because if we know the outcome Y, then it changes Z a posteriori ie in the reversed sense?
Other question: How do I read this: X | Z | Y - Is the independence of X and Z conditioned on Y , or is it X|Y | Z| Y ?
Hi, note that topic "Graphical Models — Bayes Nets" was included in 2018 course, but is not included in this year's course, thus there should be no questions about bayes nets in the exam this year.
Exam 2018, Question 4
Hello,
Normally we say, that if a RV X is independent of another RV Y, then
p(X,Y) = P(X/Y) p(Y) = P(X) p(Y).
Why is it then not correct to "to say X | Z | Y ? Is it because if we know the outcome Y, then it changes Z a posteriori ie in the reversed sense?
Other question: How do I read this: X | Z | Y - Is the independence of X and Z conditioned on Y , or is it X|Y | Z| Y ?
Hi, note that topic "Graphical Models — Bayes Nets" was included in 2018 course, but is not included in this year's course, thus there should be no questions about bayes nets in the exam this year.
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