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arXiv 1705.04537q-fin.RMstat.AP
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墨菲图:预期损失的预测评估

Murphy Diagrams: Forecast Evaluation of Expected Shortfall

Johanna F. Ziegel, Fabian Krüger, Alexander Jordan, Fernando Fasciati

摘要:

受巴塞尔协议3法规的激励,最近的研究考虑了风险价值和预期损失的联合预测。在这种情况下,可以使用一个大的评分函数家族来评估预测性能。然而,目前几乎没有直观或经验的指导,这使得评分函数的选择在实践中很尴尬。因此,我们开发的图形检查(墨菲图)的一个预测方法是否占主导地位的另一个相关类的评分函数,并提出了相关的假设检验。我们用模拟例子和对标准普尔500指数和DAX指数收益率的实证分析来说明这些工具。

英文摘要:

Motivated by the Basel 3 regulations, recent studies have considered joint forecasts of Value-at-Risk and Expected Shortfall. A large family of scoring functions can be used to evaluate forecast performance in this context. However, little intuitive or empirical guidance is currently available, which renders the choice of scoring function awkward in practice. We therefore develop graphical checks (Murphy diagrams) of whether one forecast method dominates another under a relevant class of scoring functions, and propose an associated hypothesis test. We illustrate these tools with simulation examples and an empirical analysis of S&P 500 and DAX returns.

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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