Buttonwood: Model behaviour

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Buttonwood: Model behaviour

机译：Buttonwood：模型行为

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Hedge funds had a pretty good year in 2009. The average fund regained almost all the ground that was lost in 2008. So it came as a bit of a surprise when Man Group, one of the largest hedge-fund groups, reported on January 15th that its ahl operation had suffered a disappointing end to the year.rnThe one thing Man will not do is fire the manager, ahl is the classic example of a "black box" system in which investment decisions are generated by computer models. These systems often work best when other approaches are failing. In 2008 managed-futures funds (the class into which ahl falls) returned an average of 18.2% while the typical fund of hedge funds lost 19.8%, according to Eureka-hedge, a data provider.

机译：对冲基金在2009年表现不错。平均基金几乎收复了2008年的全部亏损。因此，当最大的对冲基金集团之一曼氏集团（Man Group）在1月15日发布报告时，这真让人感到意外Man不会做的一件事就是解雇经理，而ahl是“黑匣子”系统的经典示例，在该系统中，投资决策是由计算机模型生成的。当其他方法失败时，这些系统通常效果最佳。数据提供商Eureka-hedge的数据显示，2008年管理型期货基金（AHL跌入的类别）平均回报率为18.2％，而典型的对冲基金亏损了19.8％。

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《The economist》 |2010年第8666期|69|共1页
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Buttonwood: Model behaviour

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