摘要翻译:
提出了一个简单的相关缺省的图形模型,并给出了损失分布的显式公式。利用代数几何技术证明了该模型对于违约依赖是好的:它代表了单个企业的任意给定边际分布和两两相关矩阵。这些技术还提供了一种基于最大似然估计的校准算法。最后,将该模型与标准正态copula模型在损失分布的尾部和隐含相关微笑方面进行了比较。
---
英文标题:
《Graphical models for correlated defaults》
---
作者:
I. Onur Filiz, Xin Guo, Jason Morton, Bernd Sturmfels
---
最新提交年份:
2008
---
分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Computational Finance 计算金融学
分类描述:Computational methods, including Monte Carlo, PDE, lattice and other numerical methods with applications to financial modeling
计算方法,包括蒙特卡罗,偏微分方程,格子和其他数值方法,并应用于金融建模
--
一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
--
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
--
一级分类:Quantitative Finance 数量金融学
二级分类:Statistical Finance 统计金融
分类描述:Statistical, econometric and econophysics analyses with applications to financial markets and economic data
统计、计量经济学和经济物理学分析及其在金融市场和经济数据中的应用
--
---
英文摘要:
A simple graphical model for correlated defaults is proposed, with explicit formulas for the loss distribution. Algebraic geometry techniques are employed to show that this model is well posed for default dependence: it represents any given marginal distribution for single firms and pairwise correlation matrix. These techniques also provide a calibration algorithm based on maximum likelihood estimation. Finally, the model is compared with standard normal copula model in terms of tails of the loss distribution and implied correlation smile.
---
PDF链接:
https://arxiv.org/pdf/0809.1393


雷达卡



京公网安备 11010802022788号







