Proposes an incremental variance-reduced stochastic gradient method for minimizing smooth nonconvex composite functions that achieves optimal first-order complexity rates.
(47) Note that τt = ⌈at + b⌉ and Bt = ⌈σ2 0 ( at + b) 2⌉
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A Stochastic Composite Gradient Method with Incremental Variance Reduction
Proposes an incremental variance-reduced stochastic gradient method for minimizing smooth nonconvex composite functions that achieves optimal first-order complexity rates.