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November 2005 Comment: A Selective Overview of Nonparametric Methods in Financial Econometrics
Peter C. B. Phillips, Jun Yu
Statist. Sci. 20(4): 338-343 (November 2005). DOI: 10.1214/088342305000000430


These comments concentrate on two issues arising from Fan’s overview. The first concerns the importance of finite sample estimation bias relative to the specification and discretization biases that are emphasized in Fan’s discussion. Past research and simulations given here both reveal that finite sample effects can be more important than the other two effects when judged from either statistical or economic viewpoints. Second, we draw attention to a very different nonparametric technique that is based on computing an empirical version of the quadratic variation process. This technique is not mentioned by Fan but has many advantages and has accordingly attracted much recent attention in financial econometrics and empirical applications.


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Peter C. B. Phillips. Jun Yu. "Comment: A Selective Overview of Nonparametric Methods in Financial Econometrics." Statist. Sci. 20 (4) 338 - 343, November 2005.


Published: November 2005
First available in Project Euclid: 12 January 2006

zbMATH: 1130.62366
MathSciNet: MR2210224
Digital Object Identifier: 10.1214/088342305000000430

Keywords: continuous time models , financial time series , jackknife , nonparametric method , realized volatility

Rights: Copyright © 2005 Institute of Mathematical Statistics

Vol.20 • No. 4 • November 2005
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