One of the most important controversies in health economics concerns the question whether the imminent aging of the population in most OECD countries will increase per-capita health care expenditures (HCE). Proponents of the "red-herring hypothesis" argue that this is not the case because most...

Predicting scalar outcomes by using functional predictors is a classical problem in functional data analysis. In many applications, however, only specific locations or time points of the functional predictors have an influence on the outcome. Such ‘points of impact’ are typically unknown and...

One of the most important controversies in health economics concerns the question whether the imminent aging of the population in most OECD countries will increase per-capita health care expenditures (HCE). Proponents of the "red-herring hypothesis" argue that this is not the case because most...

Regression trees are evaluated with respect to mean square error (MSE), mean integrated square error (MISE), and integrated squared error (ISE), as the size of the training sample goes to infinity. The asymptotically MSE- and MISE minimizing (locally adaptive) regression trees are characterized....