A. About Equation 16

We only consider the feasible cases. Then we consider the sigm(...) function in Equation 1. For instance, say x is the parameter to be trained, we want x to satisfy sigm(x) = 1 or 0, we would apply gradient-descent which will cause x + / . Two basic blocks of fully connected + ReLU layer are utilized as backbone for all benchmark datasets, generating instance-level representations with a dimensionality of 512. We set one branch here for the binary-classification problems.