In spite of Microsoft´s quasi monopoly position in the market for operating systems Linux has succeeded to become a serious competitor of Microsoft Windows. From an economic standpoint this fact raises some puzzles.(...)

The k Nearest Neighb or (kNN) density estimator first for-malized by Loftsgaarden and Quesenb erry (1965) is central to a broad range of the literature on density estimation. It is knownto b e strongly uniformly consistent if k increases appropriatelywith the sample size. The contribution of...