Exercise 5.4 - More reject options

Answers

For question (a), we need to choose from:

(3, 10 \times (1 - 0.8) = 2),

hence the optimal decision is class $0$ .

For question (b), we need to choose from:

(3, 10 \times (1 - 0.6) = 4),

hence the optimal decision is reject.

For question (c), the threshold is where:

λ_{r} = (1 - p (ŷ | x)) \cdot λ_{s} .

Plugging in figures we have:

p (ŷ | x) = 0.7 .

Thus $𝜃_{1} = 0.7$ , $𝜃_{0} = 0.3$ by symmetry.

solour_lfq

2021-03-24 13:42