The generalized exponential autoregressive (GExpAR) models are extensions of the classic exponential autoregressive (ExpAR) model with much more flexibility. In this paper, we first review some development of the ExpAR models, and then discuss the stationary conditions of the GExpAR model. A new estimation algorithm based on the variable projection method is proposed for the GExpAR models. Finally, the models are applied to two real world time series modeling and prediction. Comparison results show that (i) the proposed estimation approach is much more efficient than the classic method, (ii) the GExpAR models are more powerful in modeling the nonlinear time series. (C) 2018 Elsevier Inc. All rights reserved.
机构:
Jiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R ChinaJiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R China
Xu, Huan
Ding, Feng
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Jiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R China
Qingdao Univ Sci & Technol, Coll Automat & Elect Engn, Qingdao 266061, Shandong, Peoples R ChinaJiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R China
Ding, Feng
Yang, Erfu
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Univ Strathclyde, Space Mechatron Syst Technol Lab, Glasgow G1 1XJ, Lanark, ScotlandJiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R China
机构:
Hong Kong Univ Sci & Technol, Dept Math, Hong Hom, Hong Kong, Peoples R ChinaHong Kong Univ Sci & Technol, Dept Math, Hong Hom, Hong Kong, Peoples R China