Function File: conditionalentropy_YX (xy)

Computes the H(Y/X) = SUM( P(Xi)*H(Y/Xi) ), where H(Y/Xi) = SUM( -P(Yk/Xi)log(P(Yk/Xi))) The matrix xy must have y along rows and x along columns. Xi = SUM( COLi ) Yi = SUM( ROWi ) H(Y|X) = H(X,Y) - H(X)