Dominik Liebl
Welcome
… to my website. I am an Associate Professor of Statistics at the University of Bonn.
My research interests focus on functional data analysis, semi and nonparametric statistics, longitudinal data analysis, mathematical and computational statistics. I pursue an application oriented research approach focusing on actual real data problems that are both statistically interesting and practically relevant.
Starting points of my past and current research are data challenges, for instance, in empirical economics, energy economics, finance, ecommerce (e.g., Google AdWords data), and psychology. I am committed to providing the computational implementations of my statistical research and publish Rpackages at CRAN and GitHub accompanying my research papers.
Bio

2020present: Associate Professor of Statistics at the Institute of Finance and Statistics, University of Bonn

20142020: Assistant Professor of Statistics at the Institute of Finance and Statistics, University of Bonn

2019March: Research Visit at the UC Berkeley Simons Institute for the Theory of Computing

20132014: Postdoctoral Researcher at the European Center for Advanced Research in Economics and Statistics, Université Libre de Bruxelles

20102013: Research Assistant at the Institute for Econometrics and Statistics, University of Cologne

2010: Research Visit at the Working Group STAPH, Université ToulouseIIIPaulSabathier

20082010: PhD Fellow at the Cologne Graduate School
Publications
Publications in Statistics

Bada, O., Kneip, A., Liebl, D., Mensinger, T., Gualtieri, J., and Sickles R. C. (2021+). A wavelet method for panel models with jump discontinuities in the parameters. Accepted for publication at the Journal of Econometrics arXiv Supplementary Paper Rpackage Replication Codes

Pataky, T.C., Abramowicz, K., Liebl, D., Pini, A., Sjöstedt de Luna, S., and Schelin, L. (2021). Simultaneous inference for functional data in sports biomechanics: Comparing statistical parametric mapping with intervalwise testing. Forthcoming at AStA Advances in Statistical Analysis Replication Codes

Poß, D., Liebl, D., Kneip, A., Eisenbarth, H., Wager, T. D. and Feldman Barrett, L. (2020). Superconsistent estimation of points of impact in nonparametric regression with functional predictors. Journal of the Royal Statistical Society, Series B 82(4), 11151140 Rpackage arXiv

Liebl, D., Rameseder, S. and Rust, C. (2020). Improving estimation in functional linear regression with points of impact: Insights into Google AdWords. Journal of Computational and Graphical Statistics 29(4), 814826 Rpackage arXiv

Kneip, A. and Liebl, D. (2020). On the optimal reconstruction of partially observed functional data. The Annals of Statistics, 48(3), 16921717 Rpackage arXiv

Liebl, D. (2019). Nonparametric testing for differences in electricity prices: The case of the Fukushima nuclear accident. The Annals of Applied Statistics, 13(2), 11281146 Supplementary Paper RCodes & Data arXiv

Liebl, D. and Rameseder, S. (2019). Partially observed functional data: The case of systematically missing parts. Computational Statistics & Data Analysis, 131, 104115 Rpackage arXiv

Liebl, D. and Walders, F. (2019). Parameter regimes in partial functional panel regression. Econometrics and Statistics, 11, 105115 Supplementary Paper arXiv

Liebl, D. (2019). Inference for sparse and dense functional data with covariate adjustments. Journal of Multivariate Analysis, 170, 315335 arXiv

Bada, O. and Liebl, D. (2014). phtt: Panel data analysis with heterogeneous time trends in R. Journal of Statistical Software, 59(6), 133 Rpackage

Liebl, D. (2013). Modeling and forecasting electricity prices: A functional data perspective. The Annals of Applied Statistics, 7(3), 15621592 RCodes & Data arXiv
Book Chapters

Liebl, D. and Reimherr, M. (2020). Simultaneous Inference for Functionvalued Parameters: a Fast and Fair Approach. Functional and HighDimensional Statistics and Related Fields. Edited by: Aneiros, G., Horová, I., Hužková, M. and Vieu, P., pp. 153159

Walders, F. and Liebl, D. (2017). Parameter regimes in partially functional linear regression for panel data. Functional Statistics and Related Fields. Edited by: Aneiros, G., Bongiorno, E. G., Cao, R., Vieu, P., pp. 261270

Liebl, D. and Kneip, A. (2014). Modelling electricity prices as functional data on random domains. Contributions in InfiniteDimensional Statistics and Related Topics. Edited by: Bongiorno, E. G., Salinelli, E., Goia, A., Vieu, P., pp. 9097

Liebl, D., Mosler, K. and Willwacher, S. (2012). Robust clustering of joint moment curves. 9. Symposium der Sektion Sportinformatik der Deutschen Vereinigung für Sportwissenschaft. Edited by: Byshko, R., Dahmen, T., Gratkowski, M., Gruber, M., Quintana, J., Saupe, D., Vieten, M., Woll, A., pp. 6873
Further Publications

Liebl, D. (2021+). Letter to the Editor on: "Comparing Groups of Time Dependent Data Using Locally Weighted Scatterplot Smoothing AlphaAdjusted Serial Ttests" by Niiler (2020) (Accepted for publication at Gait & Posture)

Warmenhoven, J., Bargary, N., Liebl, D., Harrison, A. J., Robinson, M. A., Gunning, E., Hooker, G. (2021). PCA of Waveforms and Functional PCA: A Primer for Biomechanics. Journal of Biomechanics, 116, 110106

Hollander, K., Liebl, D., Willwacher, S., Meining, S., Mattes, K. and Zech, A. (2019). Adaptation of running biomechanics to repeated barefoot running: A randomized controlled study. The American Journal of Sports Medicine, 47(8), 19751983

Pataky, T. C., Vanrenterghem, J., Robinson, M. A. and Liebl, D. (2019). On the validity of statistical parametric mapping for nonuniformly and heterogeneously smooth onedimensional biomechanical data. Journal of Biomechanics, 91, 114123

Hamacher, D., Liebl, D., Hödl, C., Heßler, V., Kniewasser, C. K., Thönnessen, T. and Zech, A. (2019). Gait stability and its influencing factors in older adults. Frontiers in Physiology, 9.

Zech, A., Meining, S., Hötting, K., Liebl, D., Mattes, K. and Hollander, K. (2018). Effects of barefoot and footwear conditions on learning of a dynamic balance task: A randomized controlled study. European Journal of Applied Physiology, 118(12), 26992706.

Liebl, D., Willwacher, S., Hamill, J. and Brüggemann, G. P. (2014). Ankle plantarflexion strength in rearfoot and forefoot runners: A novel clusteranalytic approach. Human Movement Science, 35, 104125 preprint
PhD Thesis

Liebl, D. (2013). Contributions to functional data analysis with applications to modeling time series and panel data. PhDThesis  University of Cologne
Open Reviews
Working Papers

Liebl, D. and Reimherr M. (2021). Fast and fair simultaneous confidence bands for functional parameters (Under review at the Journal of the Royal Statistical Society, Series B. Status: Major Revision) Rpackage

Liebl, D. and Schüwer U. (2021). ProTrump partisanship and COVID19 mortality: A modelbased counterfactual analysis SSRN
Work in Progress

Bada, O. and Liebl, D. A subsampled penalty criterion to estimate the number of nonvanishing common factors in large panels

Liebl, D. and Mensinger, T. On the minor role of bandwidth selection when smoothing sparse to dense functional data

Liebl, D. and Rust, C. Directed local testing in the functional linear model

Gider, J. and Liebl, D. Observe the unobservable: Firm value and firmspecific heterogeneity in time trends

Liebl, D. and Reimherr, M. Fast and fair simultaneous confidence regions for functional parameters over arbitrary domains

Hörmann, S., Kraus, D., and Liebl, D. Testing the MCARassumption for partially observed functional data
Editorial Services

Associate Editor (since 2021), Journal of the Royal Statistical Society: Series C

since Mai 2020: Guest Editor, Special Issue: Statistics in Sports, AStAAdvances in Statistical Analysis (with Andreas Groll, TU Dortmund University)
Refereeing
The Annals of Statistics (AOS), Journal of the Royal Statistical Society: Series B (JRSSB), Journal of the American Statistical Association (JASA), Biometrika, The Annals of Applied Statistics (AOAS), Journal of the Royal Statistical Society: Series C (JRSSC), Journal of Time Series Analysis (JTSA), Computational Statistics & Data Analysis (CSDA), Statistical Modeling: An International Journal (SMIJ), Advances in Statistical Analysis (AStA), Econometrics and Statistics (ECOSTA), Advances in Data Analysis and Classification (ADAC), Journal of Computational and Graphical Statistics (JCGS), Journal of Applied Statistics (JAS), Energy Economics (ENEECO), International Journal of Forecasting (IJF), TEST: Journal of the Spanish Society of Statistics and Operations Research, Journal of Statistical Planning and Inference (JSPI), Journal of Multivariate Analysis (JMVA), Statistica Sinica (SS), Statistics and Probability Letters (STAPRO)
Software

Together with my coauthor Oualid Bada, I am the creator and maintainer of the Rpackage phtt. The package provides estimation procedures for panel data with general forms of unobservable heterogeneous effects.

Rpackage FunRegPoI

Rpackage PartiallyFD

Rpackage ReconstPoFD

Rpackage fdapoi

Rpackage sawr

Rpackage ffscb
Teaching Portfolio
Excerpt of past and current courses:

The beginnings of a lecture script for Computational Statistics (in German)
Skript: Computational Statistics (German) 
Computational Statistics, Bachelor Course at the University Bonn
Main Textbook: Introduction to Statistical Learning 
Research Module in Econometrics & Statistics, Master Course at the University Bonn
Course Material 
Short lecture A Gentle Introduction to Functional Data Analysis at the University of Passau
Main Textbook: Introduction to Functional Data Analysis by Kokoszka, P., and Reimherr, M.
Course Material 
Econometrics, PhD course at the University of Bonn
Main Textbook: Econometrics by Hayashi, F. 
Nonparametric Statistics, Bachelor course at the University of Bonn
Main Textbooks: Nichtparametrische Statistische Methoden by Büning, H., Trenkler, G., and
Local Polynomial Modelling and its Applications by Fan, J. and Gijbels, I.