Research output: Contribution to journal › Article › peer-review
Statistical inference in partially time-varying coefficient models. / Li, Degui; Chen, Jia; Lin, Zhengyan.
In: Journal of Statistical Planning and Inference, Vol. 141, No. 2, 21.02.2011, p. 995-1013.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Statistical inference in partially time-varying coefficient models
AU - Li, Degui
AU - Chen, Jia
AU - Lin, Zhengyan
N1 - (C) 2010 Elsevier B.V. All rights reserved.
PY - 2011/2/21
Y1 - 2011/2/21
N2 - A partially time-varying coefficient time series model is introduced to characterize the nonlinearity and trending phenomenon. To estimate the regression parameter and the nonlinear coefficient function, the profile least squares approach is applied with the help of local linear approximation. The asymptotic distributions of the proposed estimators are established under mild conditions. Meanwhile, the generalized likelihood ratio test is studied and the test statistics are demonstrated to follow asymptotic chi(2)-distribution under the null hypothesis. Furthermore, some extensions of the proposed model are discussed and several numerical examples are provided to illustrate the finite sample behavior of the proposed methods.
AB - A partially time-varying coefficient time series model is introduced to characterize the nonlinearity and trending phenomenon. To estimate the regression parameter and the nonlinear coefficient function, the profile least squares approach is applied with the help of local linear approximation. The asymptotic distributions of the proposed estimators are established under mild conditions. Meanwhile, the generalized likelihood ratio test is studied and the test statistics are demonstrated to follow asymptotic chi(2)-distribution under the null hypothesis. Furthermore, some extensions of the proposed model are discussed and several numerical examples are provided to illustrate the finite sample behavior of the proposed methods.
KW - Local linear smoother
KW - Generalized likelihood ratio statistics
KW - PARTIALLY LINEAR-MODELS
KW - Profile least squares
KW - Time-varying coefficient model
KW - ERRORS
KW - SERIES MODELS
KW - SEMIPARAMETRIC REGRESSION
KW - CENTRAL-LIMIT-THEOREM
KW - VARIABLE SELECTION
KW - Semiparametric regression
UR - http://www.scopus.com/inward/record.url?scp=77956592418&partnerID=8YFLogxK
U2 - 10.1016/j.jspi.2010.09.004
DO - 10.1016/j.jspi.2010.09.004
M3 - Article
VL - 141
SP - 995
EP - 1013
JO - Journal of Statistical Planning and Inference
JF - Journal of Statistical Planning and Inference
SN - 0378-3758
IS - 2
ER -