Duality for optimal consumption with randomly terminating income
Duality for optimal consumption with randomly terminating income
复制标题
随机终止收入的最优消费的二元性
DOI:
10.1111/mafi.12322
复制
发表时间:
2021
影响因子:
1.6
通讯作者:
Davey A
中科院分区:
文献类型:
--
作者:
Davey A
We establish a rigorous duality theory, under No Unbounded Profit with Bounded Risk, for an infinite horizon problem of optimal consumption in the presence of an income stream that can terminate randomly at an exponentially distributed time, independent of the asset prices. We thus close a duality gap encountered in the Davis‐Vellekoop example in a version of this problem in a Black‐Scholes market. Many of the classical tenets of duality theory hold, with the notable exception that marginal utility at zero initial wealth isfinite. We use as dual variables a class of supermartingale deflators such that deflated wealth plus cumulative deflated consumption in excess of income is a supermartingale. We show that the space of discounted local martingale deflators is dense in our dual domain, so that the dual problem can also be expressed as an infimum over the discounted local martingale deflators. We characterize the optimal wealth process, showing that optimal deflated wealth is a potential decaying to zero, while deflated wealth plus cumulative deflated consumption over income is a uniformly integrable martingale at the optimum. We apply the analysis to the Davis‐Vellekoop example and give a numerical solution.
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影响因子:
0.8
作者:
Gordan Zitkovic
通讯作者:
Gordan Zitkovic
DOI:
10.1109/cdc.2009.5400455
发表时间:
2009
期刊:
Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference
影响因子:
--
作者:
M. Vellekoop;Mark H. A. Davis
通讯作者:
Mark H. A. Davis
影响因子:
1.7
作者:
Oleksii Mostovyi
通讯作者:
Oleksii Mostovyi
影响因子:
1.7
作者:
Jakša Cvitanić;W. Schachermayer;Hui Wang
通讯作者:
Hui Wang
DOI:
10.1214/21-aap1767
发表时间:
2020
期刊:
The Annals of Applied Probability
影响因子:
--
作者:
M. Monoyios
通讯作者:
M. Monoyios