Krisen erfordern flexibles Handeln und schnelle Anpassungen sowohl von Menschen als auch von öffentlichen Institutionen. Die öffentliche Hand und insbesondere die deutschen Gesundheitsbehörden sind während der Covid-19-Pandemie, beginnend im März 2020, massiv herausgefordert. Die...

Open source software (oss), the origins of which can be traced back to the 1950s, is software distributed with a license that allows access to its source code, free redistribution, the creation of derived works, and unrestricted use. oss applications cover most areas of consumer and business...

Most people learn to drive without knowing how the engine works. In a similar vein, the author believes that students can learn economics without knowing the algebra and calculus underlying the results. If instructors follow the philosophy of other economics courses in using graphs to illustrate...

This paper provides some reflections on the field of mathematical software on the occasion of John Rice’s 65th birthday. I describe some of the common themes of research in this field and recall some significant events in its evolution. Finally, I raise a number of issues that are of concern...

Abstract Instrumental variables is a popular method in epidemiology and related fields, to estimate causal effects in the presence of unmeasured confounding. Traditionally, instrumental variable analyses have been confined to linear models, in which the causal parameter of interest is typically...

Econometric estimation using simulation techniques, such as the efficient method of moments, may be time consuming. The use of ordinary matrix-programming languages such as GAUSS, MATLAB, Ox, or S-PLUS will often cause extra delays. For the efficient method of moments implemented to estimate...

This master thesis discusses selected topics of Functional Data Analysis (FDA). FDA deals with the random variables (and process) with realizations in the (smooth) functional space. The first part of this thesis introduces the basic assumptions, notation and ideas of FDA, here we will mainly...

This master thesis is devoted to Classification and Regression Trees (CART). CART is classification method which uses historical data to construct decision trees. Depending on available information about the dataset, classification tree or regression tree can be constructed. Constructed tree can...