  & = & \overset{n}{\underset{i=0}{\sum}}I(X_{i};Y_{i},A_{i},\textrm{h}_{0},\textrm{h}_{0})-I(Y_{i};X_{i}|A_{i})\nonumber \\  & = & \overset{n}{\underset{i=0}{\sum}}I(X_{i};Y_{i},A_{i},\textrm{h}_{0},\textrm{h}_{0}