1. Unlike the works HaoChen and Sra and Nagaraj et.al, this work uses the fact that all component functions f_i are mu strongly convex. 2. The authors need to explain why removing some of the assumptions like bounded variance and bounded gradients is an important contribution via. solid examples. 3. The quantity sigma^{*} being finite also implies that all the gradients are finite via. smoothness property of the functions f_i and gives a natural upper bound.
2. The authors need to explain why removing some of the assumptions like bounded variance and bounded gradients is an important contribution via. solid examples.