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arXiv 0906.3968q-fin.RM
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操作风险的贝叶斯网络方法

A Bayesian Networks Approach to Operational Risk

V. Aquaro, M. Bardoscia, R. Bellotti, A. Consiglio, F. De Carlo, G. Ferri

摘要:

提出了一种基于贝叶斯网络计算范式的操作风险管理系统。该算法允许只使用内部损失数据构建针对每个银行的贝叶斯网络,并以简单而现实的方式考虑银行不同流程之间的相关性。在可变时间范围内对内部损耗进行平均,从而去除不同时间的相关性,同时保持相关性:因此,平均损耗适合于执行网络拓扑和参数的学习。该算法已在合成时间序列上得到验证。应该强调的是,所提出的算法的实际实施有一个小的影响,银行的组织结构,并需要在有限的计算领域的人力资源的投资。

英文摘要:

A system for Operational Risk management based on the computational paradigm of Bayesian Networks is presented. The algorithm allows the construction of a Bayesian Network targeted for each bank using only internal loss data, and takes into account in a simple and realistic way the correlations among different processes of the bank. The internal losses are averaged over a variable time horizon, so that the correlations at different times are removed, while the correlations at the same time are kept: the averaged losses are thus suitable to perform the learning of the network topology and parameters. The algorithm has been validated on synthetic time series. It should be stressed that the practical implementation of the proposed algorithm has a small impact on the organizational structure of a bank and requires an investment in human resources limited to the computational area.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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