A Stochastic Primal-Dual Method for Optimization with Conditional Value at Risk Constraints
A Stochastic Primal-Dual Method for Optimization with Conditional Value at Risk Constraints
复制标题
条件风险价值约束下的随机原始对偶优化方法
DOI:
10.1007/s10957-021-01888-x
复制
发表时间:
2021
影响因子:
1.9
通讯作者:
Bose, Subhonmesh
中科院分区:
文献类型:
--
作者:
Madavan, Avinash N.;Bose, Subhonmesh
We study a first-order primal-dual subgradient method to optimize risk-constrained risk-penalized optimization problems, where risk is modeled via the popular conditional value at risk (CVaR) measure. The algorithm processes independent and identically distributed samples from the underlying uncertainty in an online fashion and produces an-approximately feasible and-approximately optimal point withinKiterations with constant step-size, whereincreases with tunable risk-parameters of CVaR. We find optimized step sizes using our bounds and precisely characterize the computational cost of risk aversion as revealed by the growth in. Our proposed algorithm makes a simple modification to a typical primal-dual stochastic subgradient algorithm. With this mild change, our analysis surprisingly obviates the need to impose a priori bounds or complex adaptive bounding schemes for dual variables to execute the algorithm as assumed in many prior works. We also draw interesting parallels in sample complexity with that for chance-constrained programs derived in the literature with a very different solution architecture.
登录
查看更多内容
DOI:
10.1137/16m1058492
发表时间:
2015-12
期刊:
SIAM J. Control. Optim.
影响因子:
--
作者:
Christopher W. Miller;Insoon Yang
通讯作者:
Christopher W. Miller;Insoon Yang
DOI:
--
发表时间:
1972
期刊:
IEEE Conference on Decision and Control
影响因子:
--
作者:
D. Bertsekas
通讯作者:
D. Bertsekas
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
A. S. Bedi;Alec Koppel;K. Rajawat
通讯作者:
K. Rajawat
DOI:
10.1137/18m1229869
发表时间:
2018-02
期刊:
SIAM J. Optim.
影响因子:
--
作者:
Yangyang Xu
通讯作者:
Yangyang Xu
影响因子:
6.8
作者:
Michael J. Hadjiyiannis;P. Goulart;D. Kuhn
通讯作者:
Michael J. Hadjiyiannis;P. Goulart;D. Kuhn