Title
The subdifferential of measurable composite max integrands and smoothing approximation
Abstract
The subdifferential calculus for the expectation of nonsmooth random integrands involves many fundamental and challenging problems in stochastic optimization. It is known that for Clarke regular integrands, the Clarke subdifferential of the expectation equals the expectation of their Clarke subdifferential. In particular, this holds for convex integrands. However, little is known about the calculation of Clarke subgradients for the expectation of non-regular integrands. The focus of this contribution is to approximate Clarke subgradients for the expectation of random integrands by smoothing methods applied to the integrand. A framework for how to proceed along this path is developed and then applied to a class of measurable composite max integrands. This class contains non-regular integrands from stochastic complementarity problems as well as stochastic optimization problems arising in statistical learning.
Year
DOI
Venue
2020
10.1007/s10107-019-01441-9
Mathematical Programming
Keywords
DocType
Volume
Stochastic optimization, Clarke subgradient, Smoothing, Non-regular integrands, 90C15
Journal
181
Issue
ISSN
Citations 
2
0025-5610
1
PageRank 
References 
Authors
0.36
0
3
Name
Order
Citations
PageRank
James V. Burke1753113.35
Xiaojun Chen21298107.51
Hailin Sun310.36