英文标题:
《Computation of systemic risk measures: a mixed-integer linear
programming approach》
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作者:
\\c{C}a\\u{g}{\\i}n Ararat, Nurtai Meimanjanov
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最新提交年份:
2021
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英文摘要:
Systemic risk is concerned with the instability of a financial system whose members are interdependent in the sense that the failure of a few institutions may trigger a chain of defaults throughout the system. Recently, several systemic risk measures are proposed in the literature that are used to determine capital requirements for the members subject to joint risk considerations. We address the problem of computing systemic risk measures for systems with sophisticated clearing mechanisms. In particular, we consider the Eisenberg-Noe network model and the Rogers-Veraart network model, where the former one is extended to the case where operating cash flows in the system are unrestricted in sign. We propose novel mixed-integer linear programming problems that can be used to compute clearing vectors for these models. Due to the binary variables in these problems, the corresponding (set-valued) systemic risk measures fail to have convex values in general. We associate nonconvex vector optimization problems to these systemic risk measures and provide theoretical results related to the weighted-sum and minimum step-length scalarizations of these problems under the extended Eisenberg-Noe and Rogers-Veraart models. We test the proposed formulations on computational examples and perform sensitivity analyses with respect to some model-specific and structural parameters.
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中文摘要:
系统性风险关注的是金融系统的不稳定性,其成员相互依存,因为少数机构的倒闭可能引发整个系统的一连串违约。最近,文献中提出了几种系统性风险度量,用于确定受共同风险考虑影响的成员的资本要求。我们解决了为具有复杂清算机制的系统计算系统风险度量的问题。特别是,我们考虑了Eisenberg-Noe网络模型和Rogers-Veraart网络模型,其中前者扩展到系统中的运营现金流在符号上不受限制的情况。我们提出了新的混合整数线性规划问题,可用于计算这些模型的清除向量。由于这些问题中的二元变量,相应的(集值)系统风险度量通常不具有凸值。我们将非凸向量优化问题与这些系统风险度量相关联,并在扩展的Eisenberg-Noe和Rogers-Veraart模型下提供了与这些问题的加权和和和最小步长标度化相关的理论结果。我们在计算实例上测试了所提出的公式,并对一些特定于模型的参数和结构参数进行了敏感性分析。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Mathematical Finance 数学金融学
分类描述:Mathematical and analytical methods of finance, including stochastic, probabilistic and functional analysis, algebraic, geometric and other methods
金融的数学和分析方法,包括随机、概率和泛函分析、代数、几何和其他方法
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一级分类:Mathematics 数学
二级分类:Optimization and Control 优化与控制
分类描述:Operations research, linear programming, control theory, systems theory, optimal control, game theory
运筹学,线性规划,控制论,系统论,最优控制,博弈论
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一级分类:Quantitative Finance 数量金融学
二级分类:Risk Management 风险管理
分类描述:Measurement and management of financial risks in trading, banking, insurance, corporate and other applications
衡量和管理贸易、银行、保险、企业和其他应用中的金融风险
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