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Semiparametric Estimation and Variable Selection for Single-index Copula Models

Bingduo Yang, Christian Hafner, Guannan Liu and Wei Long

No 2018-064, IRTG 1792 Discussion Papers from Humboldt University of Berlin, International Research Training Group 1792 "High Dimensional Nonstationary Time Series"

Abstract: A copula model with flexibly specified dependence structure can be useful to capture the complexity and heterogeneity in economic and financial time series. However, there exists little methodological guidance for the specification process using copulas. This paper contributes to fill this gap by considering the recently proposed single-index copulas, for which we propose a simultaneous estimation and variable selection procedure. The proposed method allows to choose the most relevant state variables from a comprehensive set using a penalized estimation, and we derive its large sample properties. Simulation results demonstrate the good performance of the proposed method in selecting the appropriate state variables and estimating the unknown index coefficients and dependence parameters. An application of the new procedure identifies six macroeconomic driving factors for the dependence among U.S. housing markets.

Keywords: Semiparametric Copula; Single-Index Copula; Variable Selection; SCAD (search for similar items in EconPapers)
JEL-codes: C14 C22 (search for similar items in EconPapers)
Date: 2018
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https://www.econstor.eu/bitstream/10419/230774/1/irtg1792dp2018-064.pdf (application/pdf)

Related works:
Working Paper: Semiparametric estimation and variable selection for single-index copula models (2022)
Journal Article: Semiparametric estimation and variable selection for single‐index copula models (2021) Downloads
Working Paper: Semiparametric Estimation and Variable Selection for Single-index Copula Models (2019)
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