2 papers
econ.EM2025
Testing for equivalence of pre-trends in Difference-in-Differences estimation
Holger Dette, Martin Schumann
The plausibility of the ``parallel trends assumption'' in Difference-in-Differences estimation is usually assessed by a test of the null hypothesis that the difference between the…
math.ST2024
Confidence surfaces for the mean of locally stationary functional time series
Holger Dette, Weichi Wu
The problem of constructing a simultaneous confidence surface for the 2-dimensional mean function of a non-stationary functional time series is challenging as these bands can not b…