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자연과학대학
통계학전공
Journal papers
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Nonparametric estimation of time varying correlation coefficient
Title
Nonparametric estimation of time varying correlation coefficient
Authors
Choi J.-E.
;
Shin D.W.
Ewha Authors
신동완
SCOPUS Author ID
신동완
Issue Date
2021
Journal Title
Journal of the Korean Statistical Society
ISSN
1226-3192
Citation
Journal of the Korean Statistical Society vol. 50, no. 2, pp. 333 - 353
Keywords
Confidence interval
;
Nonparametric estimation
;
Statistical test
;
Time varying correlation coefficient
Publisher
Springer
Indexed
SCIE; SCOPUS; KCI
Document Type
Article
Abstract
We propose a new time varying correlation coefficient, which is a local correlation measure of a pair of time series. The time varying correlation coefficient is locally estimated using a nonparametric kernel method. Asymptotic normality of the estimated time varying correlation is established, which allows us to construct statistical methods of confidence interval and hypothesis tests. Finite sample validity of the proposed methods are demonstrated by a Monte–Carlo study. The proposed time varying correlation coefficient method is well illustrated by an analysis of five sets of world major stock price index returns. © 2020, Korean Statistical Society.
DOI
10.1007/s42952-020-00073-6
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