Sharp Threshold Detection Based on Sup-norm Error rates in High-dimensional Models
Laurent Callot (),
Mehmet Caner (),
Anders Kock and
Juan Andreas Riquelme ()
Additional contact information
Juan Andreas Riquelme: North Carolina State University, Postal: Department of Economics, 4168 Nelson Hall, Raleigh, NC 27695
CREATES Research Papers from Department of Economics and Business Economics, Aarhus University
We propose a new estimator, the thresholded scaled Lasso, in high dimensional threshold regressions. First, we establish an upper bound on the sup-norm estimation error of the scaled Lasso estimator of Lee et al. (2012). This is a non-trivial task as the literature on highdimensional models has focused almost exclusively on estimation errors in stronger norms. We show that this sup-norm bound can be used to distinguish between zero and non-zero coefficients at a much finer scale than would have been possible using classical oracle inequalities. Thus, our sup-norm bound is tailored to consistent variable selection via thresholding. Our simulations show that thresholding the scaled Lasso yields substantial improvements in terms of variable selection. Finally, we use our estimator to shed further empirical light on the long running debate on the relationship between the level of debt (public and private) and GDP growth.
Keywords: Threshold model; sup-norm bound; thresholded scaled Lasso; oracle inequality; debt effect on GDP growth. (search for similar items in EconPapers)
JEL-codes: C13 C23 C26 (search for similar items in EconPapers)
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1) Track citations by RSS feed
Downloads: (external link)
Journal Article: Sharp Threshold Detection Based on Sup-Norm Error Rates in High-Dimensional Models (2017)
Working Paper: Sharp Threshold Detection based on Sup-Norm Error Rates in High-dimensional Models (2015)
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
Persistent link: https://EconPapers.repec.org/RePEc:aah:create:2015-10
Access Statistics for this paper
More papers in CREATES Research Papers from Department of Economics and Business Economics, Aarhus University
Bibliographic data for series maintained by ().