Slide 57
Slide 57 text
ஞ࣍తҼղͷ๏ଇ (Technical Point 6.1 Causal directed acyclic graphs)
57
f(v) = ΠM
j=1
f(vj
|paj
)
DAGͷ֬ม V ͷಉ࣌ɼ࣍ͷΑ͏ʹද͢͜ͱ͕Ͱ͖Δ
Y
A L
Pr(Y, A, L) = Pr(Y|L) Pr(L|A) Pr(A)
Pr(Y, A, L) = Pr(Y|A, L) Pr(L, A) Pr(A)
= Pr(Y|A, L) Pr(L|A) Pr(A)
Chain rule ʹҼՌਪͷ৭Λ͚ͭΔ
Chain rule
MarkovੑΑΓ ͷӨڹ͔͠ड͚ͳ͍
Pr(Y, A, L) = Pr(Y|A, L) Pr(A|L) Pr(L)
Pr(Y, A, L) = Pr(Y|L) Pr(A|L) Pr(L)