Hybrid rank-based panel unit root tests

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Abstract

We study optimality of unit root tests in a semiparametric panel setting with both large time-series and cross-sectional dimension. While, with finite cross-sectional dimension, the limit experiments are locally asymptotically Brownian functional (LABF), we find the classical locally asymptotically normal (LAN) structure with large cross-sectional dimension. This leads to an upper bound for the power of tests using sequential asymptotics. We propose a hybrid rank-based test, based on cross-sectional ranks per time unit, that is point optimal. We corroborate our theoretical results with a Monte Carlo study.
Original languageEnglish
Title of host publicationRecent Advances in Econometrics and Statistics
Subtitle of host publicationFestschrift in Honour of Marc Hallin
EditorsMatteo Barigozzi, Siegfried Hörmann, Davy Paindaveine
PublisherSpringer
Pages105-125
Number of pages21
ISBN (Electronic)978-3-031-61853-6
ISBN (Print)978-3-031-61852-9, 978-3-031-61855-0
DOIs
Publication statusPublished - 29 Oct 2024

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