Adaptive restart of accelerated gradient methods under local quadratic growth condition
Adaptive restart of accelerated gradient methods under local quadratic growth condition
复制标题
局部二次增长条件下加速梯度法的自适应重启
DOI:
10.1093/imanum/drz007
复制
发表时间:
2019
影响因子:
2.1
通讯作者:
Fercoq O
中科院分区:
文献类型:
--
作者:
Fercoq O
By analyzing accelerated proximal gradient methods under a local quadratic growth condition, we show that restarting these algorithms at any frequency gives a globally linearly convergent algorithm. This result was previously known only for long enough frequencies. Then as the rate of convergence depends on the match between the frequency and the quadratic error bound, we design a scheme to automatically adapt the frequency of restart from the observed decrease of the norm of the gradient mapping. Our algorithm has a better theoretical bound than previously proposed methods for the adaptation to the quadratic error bound of the objective. We illustrate the efficiency of the algorithm on Lasso, regularized logistic regression and total variation denoising problems.
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DOI:
10.1137/130949993
发表时间:
2013-12
期刊:
SIAM J. Optim.
影响因子:
--
作者:
Olivier Fercoq;Peter Richtárik
通讯作者:
Olivier Fercoq;Peter Richtárik
影响因子:
2.1
作者:
Beck, Amir;Teboulle, Marc
通讯作者:
Teboulle, Marc
DOI:
10.1287/moor.2017.0889
发表时间:
2016-02
期刊:
Math. Oper. Res.
影响因子:
--
作者:
D. Drusvyatskiy;A. Lewis
通讯作者:
D. Drusvyatskiy;A. Lewis
DOI:
10.48550/arxiv.1609.07358
发表时间:
2016
期刊:
--
影响因子:
--
作者:
Fercoq O
通讯作者:
Fercoq O