3.23 ( ) www Show that the marginal probability of the data, in other words the model evidence, for the model described in Exercise 3.12 is given by p(t) =

1

(2π)N/2 ba0 0

baN N

Γ(aN)

Γ(a0)

|SN|1/2

|S0|1/2

(3.118)

by first marginalizing with respect to w and then with respect to β.