27. p(x|x1:n, ⌘, ↵) =
X
z
p(x, z|x1:n, ⌘, ↵)
=
Z X
z
p(x, z, , ⇡|x1:n, ⌘, ↵)d d⇡
=
Z X
z
p(x, z| , ⇡, x1:n, ⌘, ↵)
⇥p( , ⇡|x1:n, ⌘, ↵)d d⇡
=
Z X
z
p(x, z| , ⇡)p( , ⇡|x1:n, ⌘, ↵)d d⇡
=
Z X
z
p(x|z, , ⇡)p(z| , ⇡)p( , ⇡|x1:n, ⌘, ↵)d d⇡
=
Z X
z
p(x| z)p(z|⇡)p( , ⇡|x1:n, ⌘, ↵)d d⇡
27