# Johannes Schmidt-Hieber

 Position:Professor of statistics at the University of Twente Visiting addresses: Zilverling Building, Room 4062 Drienerlolaan 5 7522 NB Enschede Email: a.j.schmidt-hieber@utwente.nl

We have a job opening for one postdoc (two years) in our group. If you have a background in statistics/probability/mathematics feel free to send an email to a.j.schmidt-hieber@utwente.nl .

Articles
• Lower bounds for the trade-off between bias and mean absolute deviation preprint
With Alexis Derumigny
• Codivergences and information matrices preprint
With Alexis Derumigny
• Interpreting learning in biological neural networks as zero-order optimization method preprint
• A statistical analysis of an image classification problem preprint
With Sophie Langer
• Local convergence rates of the least squares estimator with applications to transfer learning preprint
With Petr Zamolodtchikov
• Posterior contraction for deep Gaussian process priors preprint
With Gianluca Finocchio
To appear in Journal of Machine Learning Research
• On lower bounds for the bias-variance trade-off preprint
With Alexis Derumigny
To appear in Annals of Statistics.
• On the inability of Gaussian process regression to optimally learn compositional functions preprint
With Matteo Giordano and Kolyan Ray
To appear in NeurIPS 2022.
• On frequentist coverage of Bayesian credible sets for estimation of the mean under constraints preprint
With Kevin Duisters
To appear as book chapter within Springer IISA series on Statistics and Data Science.
• On generalization bounds for deep networks based on loss surface implicit regularization preprint article
With Masaaki Imaizumi
IEEE Transactions on Information Theory, Volume 69, Issue 2, 1203 - 1223, 2023.
• Convergence rates of deep ReLU networks for multiclass classification article
With Thijs Bos
Electronic Journal of Statistics, Volume 16, Number 1, 2724-2773, 2022.
• Posterior consistency for n in the binomial (n,p) problem with both parameters unknown - with applications to quantitative nanoscopy. article preprint
With Laura Schneider, Thomas Staudt, Andrea Krajina, Timo Aspelmeier and Axel Munk.
Annals of Statistics, Volume 49, Number 6, 3534-3558, 2021.
• The Kolmogorov-Arnold representation theorem revisited article
Neural Networks, Volume 137, 119-126, 2021.
• Posterior contraction rates for support boundary recovery preprint article
Stochastic Processes and their Applications, Volume 130, Issue 11, 6638-6656, 2020. With Markus Reiss.
• Nonparametric regression using deep neural networks with ReLU activation function article pdf preprint
Annals of Statistics, Volume 48, Number 4, 1875-1897, 2020.
• Rejoinder: "Nonparametric regression using deep neural networks with ReLU activation function" article pdf
Annals of Statistics, Volume 48, Number 4, 1916-1921, 2020.
• Nonparametric Bayesian analysis of the compound Poisson prior for support boundary recovery article pdf preprint
Annals of Statistics, Volume 48, Number 3, 1432-1451, 2020. With Markus Reiss.
• Bayesian variance estimation in the Gaussian sequence model with partial information on the means. article
Electronic Journal of Statistics, Volume 14, Number 1, 239-271, 2020. With Gianluca Finocchio.
• Asymptotic nonequivalence of density estimation and Gaussian white noise for small densities preprint article
Annales de l'Institut Henri Poincaré B, Volume 55, Number 4, 2195-2208, 2019. With Kolyan Ray.
• Tests for qualitative features in the random coefficients model pdf
Electronic Journal of Statistics, Volume 3, 2257-2306, 2019. With Fabian Dunker, Konstantin Eckle, and Katharina Proksch.
• A comparison of deep networks with ReLU activation function and linear spline-type methods pdf
Neural Networks, Volume 110, 232-242, 2019. With Konstantin Eckle.
• The Le Cam distance between density estimation, Poisson processes and Gaussian white noise article preprint
Mathematical Statistics and Learning. Volume 1, Issue 2, 101-170, 2018. With Kolyan Ray.
• A regularity class for the roots of non-negative functions. pdf arXiv
Annali di Matematica Pura ed Applicata. Volume 196, Number 6, 2091-2103, 2017. With Kolyan Ray.
• Minimax theory for a class of non-linear statistical inverse problems. article revised preprint
Inverse Problems. Volume 32, Number 6, 065003, 2016. With Kolyan Ray.
• Conditions for posterior contraction in the sparse normal means problem. pdf
Electronic Journal of Statistics. Volume 10, Number 1, 976-1000, 2016. With Stéphanie van der Pas and JB Salomond.
• Bayesian linear regression with sparse priors. pdf arXiv
Annals of Statistics. Volume 43, Number 5, 1986-2018, 2015. With Ismael Castillo and Aad van der Vaart.
• On adaptive posterior concentration rates. pdf
Annals of Statistics. Volume 43, Number 5, 2259-2295, 2015. With Marc Hoffmann and Judith Rousseau.
• Spot volatility estimation for high-frequency data: adaptive estimation in practice. pdf arXiv
Springer Lecture Notes in Statistics: Modeling and Stochastic Learning for Forecasting in High Dimension. 213-241, 2015. With Till Sabel and Axel Munk.
• Asymptotic equivalence for regression under fractional noise. pdf arXiv
Annals of Statistics, Volume 42, Number 6, 2557-2585, 2014.
• Asymptotically efficient estimation of a scale parameter in Gaussian time series and closed-form expressions for the Fisher information. pdf arXiv supplement
Bernoulli, Volume 20, Number 2, 747-774, 2014. With Till Sabel.
• On an estimator achieving the adaptive rate in nonparametric regression under ${L}^{p}$-loss for all $1\le p\le \mathrm{\infty }$. preprint
This is an update of the working paper pdf. In the first version, we only consider simultaneous adaptation with respect to ${L}^{2}$- and ${L}^{\mathrm{\infty }}$-loss. This article might be easier to read and includes a small numerical study.
• Multiscale methods for shape constraints in deconvolution: Confidence statements for qualitative features. pdf supplement
Annals of Statistics, Volume 41, Number 3, 1299-1328, 2013. With Axel Munk and Lutz Dümbgen.
A first draft of this paper appeared under the title: "Multiscale methods for shape constraints in deconvolution" in 2011. pdf. It contains essentially the same results, but under a very strong assumption on the decay of the Fourier transform of the error density. The first version is much easier to read and does not require the theory of pseudo-differential operators.
• Adaptive wavelet estimation of the diffusion coefficient under additive error measurements. pdf software
Annales de l'Institut Henri Poincaré, 48, 1186-1216. With Marc Hoffmann and Axel Munk.
An earlier version of this paper was published as a working paper under the title "Nonparametric estimation of the volatility under microstructure noise: wavelet adaptation." pdf.
• Nonparametric methods in spot volatility estimation. pdf
Dissertation. Universität Göttingen und Universtät Bern, 2010.
• Lower bounds for volatility estimation in microstructure noise models. pdf
Borrowing Strength: Theory Powering Applications - A Festschrift for Lawrence D. Brown, IMS Collections, 6, 43-55, 2010. With Axel Munk.
• Nonparametric estimation of the volatility function in a high-frequency model corrupted by noise. pdf
Electronic Journal of Statistics, 4, 781-821, 2010. With Axel Munk.
• Sharp minimax estimation of the variance of Brownian motion corrupted with Gaussian noise. pdf (including supplementary material).
Statistica Sinica, 20, 1011-1024, 2010 . With T. Tony Cai and Axel Munk.
1. Statistical theory for deep neural networks with ReLU activation function. pdf
Oberwolfach Reports, 2018.
2. Nonparametric Bayes for an irregular model. pdf
Oberwolfach Reports, 2017.
3. Asymptotic equivalence for regression under dependent noise. pdf
Oberwolfach Reports, 2015.
4. Reconstruction of risk measures from financial data. pdf
Nieuw Archief voor Wiskunde, 2014.
5. Simultaneously adaptive estimation for ${L}^{2}$- and ${L}^{\mathrm{\infty }}$-loss. pdf
Oberwolfach Reports,2014.
6. Detection of qualitative features in statistical inverse problems. pdf
Oberwolfach Reports, 2012.
7. Obtaining qualitative statements in deconvolution models. pdf
Oberwolfach Reports, 2012.
8. The Estimation of different scales in microstructure noise models from a nonparametric regression perspective. pdf
Oberwolfach Reports, 2009. With Axel Munk.

Curriculum Vitae:
Born 1984 in Freiburg im Breisgau, Germany. Studies in mathematics with minor theoretical physics at Universität Freiburg (2003-2004) and Universität Göttingen (2004-2007). PhD studies at Universität Göttingen and Universität Bern 2007- 2010 (supervised by Axel Munk and Lutz Dümbgen, summa cum laude). Postdoc at Vrije Universiteit Amsterdam and ENSAE, Paris. Assistant professor at Leiden University (2014-2018). Since 2018, full professor at University of Twente.

Associate editor:
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Upcoming Talks:
Selected research visits:
University of California, Davis (September 2006-March 2007), Wharton Business school, Philadelphia (February 2008), RICAM, Linz (October-November 2008), ENSAE, Paris (August and December 2009, June 2012-May 2013, January 2019), VU Amsterdam (June 2011-May 2012), Universität Heidelberg (December 2010), Humboldt University (August 2014, August 2016, January- March 2018), Paris Dauphine (February 2014), SAMSI (June 2015), Göttingen (October-December 2015), Bochum (June-July 2016), Fudan University (June, August 2017), Isaac Newton Institute (January-June 2018), Simons Institute Berkeley (July 2019). Guest of Collaborative Research Center 649 at Humboldt University Berlin (2010 - 2011).