Oracle Efficient Estimation of Structural Breaks in Cointegrating Regressions

Artikel

In this article, we propose an adaptive group lasso procedure to efficiently estimate structural breaks in cointegrating regressions. It is well known that the group lasso estimator is not simultaneously estimation consistent and model selection consistent in structural break settings. Hence, we use a first step group lasso estimation of a diverging number of breakpoint candidates to produce weights for a second adaptive group lasso estimation. We prove that parameter changes are estimated consistently by group lasso and show that the number of estimated breaks is greater than the true number but still sufficiently close to it. Then, we use these results and prove that the adaptive group lasso has oracle properties if weights are obtained from our first step estimation. Simulation results show that the proposed estimator delivers the expected results. An economic application to the long‐run US money demand function demonstrates the practical importance of this methodology.

Object Details

• Language: Englisch

References and Relationships

• Bibliographic citation: Journal: Journal of Time Series Analysis ; ISSN: 1467-9892 ; Volume: 43 ; Year: 2021 ; Issue: 1 ; Pages: 83-104 ; Oxford, UK: John Wiley & Sons, Ltd

Classification and Topics

• Subject: Adaptive group lasso ; change‐points ; cointegration ; model selection ; US money demand

Contributors, Places and Time

• Event: Geistige Schöpfung
• (who): Schweikert, Karsten
• Event: Veröffentlichung
• (who): John Wiley & Sons, Ltd
• (where): Oxford, UK
• (when): 2021

Further information

• DOI: doi:10.1111/jtsa.12593
• Handle: http://hdl.handle.net/10419/284831
• Last update: 10.03.2025, 11:42 AM CET