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Modelling high-frequency economic time series

机译:建模高频经济时间序列

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摘要

The minute-by-minute move of the Hang Seng index (I-ISI) data over a 4-yr period is analysed and shown to possess similar statistical features as those of other markets. Based on a mathematical theorem (Pope, Ching, Phys. Fluids A 5 (1993) 1529), we derive an analytic form for the probability distribution function (PDF) of index moves from fitted functional forms of certain conditional averages of the time series. Furthermore, following a recent work by Stolovitzky and Ching (Phys. Lett. A 255 (1999) 11), we show that the observed PDF can be reproduced by a Langevin process with a move-dependent noise amplitude. The form of the Langevin equation can be determined directly from the market data. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 16]
机译:分析了恒生指数(I-ISI)数据在4年内的逐分钟变动,并显示了与其他市场相似的统计特征。基于数学定理(Pope,Ching,Phys.Fluids A 5(1993)1529),我们从时间序列的某些条件平均值的拟合函数形式中得出了指标移动的概率分布函数(PDF)的解析形式。此外,根据Stolovitzky和Ching的最新工作(Phys。Lett。A 255(1999)11),我们显示观察到的PDF可以通过Langevin过程以与运动有关的噪声幅度进行复制。 Langevin方程的形式可以直接从市场数据中确定。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:16]

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