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    • 10. 发明授权
    • Enhancing utility and diversifying model risk in a portfolio optimization framework
    • 在投资组合优化框架中提高效用和模式风险多样化
    • US06292787B1
    • 2001-09-18
    • US09151715
    • 1998-09-11
    • Jason S. ScottChristopher L. JonesJames W. ShearerJohn G. Watson
    • Jason S. ScottChristopher L. JonesJames W. ShearerJohn G. Watson
    • G06F1760
    • G06Q40/06
    • A portfolio optimization process that diversifies model risk by favoring a more diversified portfolio over other portfolios with similar characteristics is provided. According to one aspect of the present invention, a more diverse portfolio may be selected over an initial portfolio in order to diversify model risk with reference to a predetermined diversity budget, defined in terms of expected return, risk, and/or utility. An initial portfolio of financial products is determined from an available set of financial products. One or more dimensions of an error space are searched for an alternate portfolio that is more diverse than the initial portfolio. A cost associated with the alternate portfolio is then calculated by comparing the difference between a characteristic of the initial portfolio and a corresponding characteristic of the alternate portfolio. Finally, the alternate portfolio is selected as the recommended portfolio if the cost is less than or equal to the predetermined diversity budget. According to another aspect of the present invention an intelligent search is performed for a diverse portfolio that meets a predetermined diversity budget. An initial portfolio is determined based upon an available set of financial products. The cost associated with more diversified portfolios compared to the initial portfolio is considered and one of the more diversified portfolios is selected that has an associated cost that is less than or equal to the predetermined diversity budget.
    • 提供了一个投资组合优化过程,通过对具有相似特征的其他投资组合有更多样化的投资组合来实现模型风险的多样化。 根据本发明的一个方面,可以通过初始投资组合来选择更多样化的投资组合,以便参考根据预期回报,风险和/或效用来定义的预定分集预算来多样化模型风险。 金融产品的初始投资组合是从一套可用的金融产品中确定的。 搜索错误空间的一个或多个维度,该替代投资组合比初始投资组合更为多样化。 然后通过比较初始投资组合的特征与替代投资组合的相应特征之间的差异来计算与替代投资组合相关联的成本。 最后,如果成本小于或等于预定的多样性预算,那么选择替代投资组合作为推荐投资组合。 根据本发明的另一方面,对满足预定分集预算的不同投资组合执行智能搜索。 初始投资组合根据可用的一组金融产品确定。 考虑与最初投资组合相比,更多样化的投资组合所涉及的成本,并且选择具有小于或等于预定分集预算的相关成本的更多样化投资组合之一。