Time reversal and last passage time of diffusions with applications to credit risk management
Time reversal and last passage time of diffusions with applications to credit risk management
复制标题
时间反转和扩散的最后通过时间及其在信用风险管理中的应用
DOI:
10.1007/s00780-020-00423-6
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发表时间:
2020
影响因子:
1.7
通讯作者:
Rusudan Kevkhishvili
中科院分区:
文献类型:
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作者:
Masahiko Egami;Rusudan Kevkhishvili
We study time reversal, last passage time and-transform of linear diffusions. For general diffusions with killing, we obtain the probability density of the last passage time to an arbitrary level and analyse the distribution of the time left until killing after the last passage time. With these tools, we develop a new risk management framework for companies based on the leverage process (the ratio of a company asset process over its debt) and its corresponding alarming level. We also suggest how a company can determine the alarming level for the leverage process by constructing a relevant optimisation problem.