Before revision:  is a special case of SNR, and use this connection to establish the first global convergence theory of SNM. Indeed, by showing that SNR can be interpreted as a variant of the stochastic gradient descent (SGD)
After revision:  is a special case of SNR, and use this connection to establish the first global convergence theory of SNM. We establish the global convergence of SNR by showing that SNR can be interpreted as a variant of the stochastic gradient descent (SGD)