题目:
Risk Sensitive Portfolio Optimization with Default Contagion and Regime-Switching
报告人:薄立军中国科学技术大学教授
时间:2018.11.24(周六) 15:30-17:00
地点:金融工程研究中心105
摘要:
We study an open problem of risk-sensitive portfolio allocation in a regime-switching credit market with default contagion. The state space of the Markovian regime-switching process is assumed to be a countably infinite set. To characterize the value
function of the risk sensitive stochastic control problem, we investigate the
corresponding recursive infinite-dimensional nonlinear dynamical programming equations (DPEs) based on default states.
We propose to work in the following procedure: Applying the theory of the monotone
dynamical system, we first establish the existence and uniqueness of classical solutions to the recursive DPEs by a truncation argument in the finite state space. Moreover, the associated optimal feedback strategy is characterized by developing a rigorous verification theorem. Building upon results in the first stage, we construct a sequence of approximating risk sensitive control problems with finite state space and prove that the resulting smooth value functions will converge to the classical solution of the original system of DPEs. The construction and approximation of the optimal feedback strategy for the original problem are thoroughly discussed.
报告人简介:博士生导师,于2009年在南开大学获博士学位。2009、2011和2013年分别在澳大利亚墨尔本大学、法国概率与随机模型实验室、北京大学作访问研究。2013年晋升教授。陕西省数学会青年委员会委员,陕西省工业与应用数学学会理事。2012年入选教育部新世纪优秀人才支持计划。
主页:http://staff.ustc.edu.cn/~lijunbo/
English

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