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math.OC2023
Variance reduction techniques for stochastic proximal point algorithms
Cheik Traoré, Vassilis Apidopoulos, Saverio Salzo +1
In the context of finite sums minimization, variance reduction techniques are widely used to improve the performance of state-of-the-art stochastic gradient methods. Their practica…
math.OC2023
Regularization properties of dual subgradient flow
Vassilis Apidopoulos, Cesare Molinari, Lorenzo Rosasco +1
Dual gradient descent combined with early stopping represents an efficient alternative to the Tikhonov variational approach when the regularizer is strongly convex. However, for ma…