This paper surveys the capacity of simple macroeconomic models - ”three easy pieces” - to account for persistent and positive valuations of privately issued assets based on the blockchain. Each of these three models - transactions demand for a means of payment, consumption-based capital...

The proportional subdistribution hazards (PSH) model is popularly used to deal with competing risks data. Censored quantile regression provides an important supplement as well as variable selection methods, due to large numbers of irrelevant covariates in practice. In this paper, we study...

The Financial Risk Meter (FRM) is an established mechanism that, based on conditional Value at Risk (VaR) ideas, yields insight into the dynamics of network risk. Originally, the FRM has been composed via Lasso based quantile regression, but we here extend it by incorporating the idea of...

For treatment effects - one of the core issues in modern econometric analysis - prediction and estimation are flip-sides of the same coin. As it turns out, machine learning methods are the tool for generalized prediction models. Combined with econometric theory allows us to estimate not only the...

K-means clustering is one of the most widely-used partitioning algorithm in cluster analysis due to its simplicity and computational efficiency, but it may not provide ideal clustering results when applying to data with non-spherically shaped clusters. By considering the asymmetrically weighted...

Der Mathematiker und Statistiker E. J. Gumbel führte eine Doppelexistenz - als Mathematiker und Statistiker von 1923 bis zu seiner Vertreibung 1932 an der Universität Heidelberg und als politischer Autor. Auch im Exil in Frankreich behielt er diese Doppeltätigkeit bei, verfasste mathematische...

Driven by increased complexity of dynamical systems, the solution of system of differential equations through numerical simulation in optimization problems has become computationally expensive. This paper provides a smart data driven mechanism to construct low dimensional surrogate models. These...