Herkömmliche Computer erledigen exakt berechenbare, routinehafte Aufgaben schneller und zuverlässiger als der Mensch. Einige typisch menschliche Fähigkeiten (z. B. die Gesichtserkennung) stellen die konventionelle Informationsverarbeitung dagegen vor große Schwierigkeiten. Herkömmliche...

Attraction models are very popular in marketing research for studying the effects of marketing instruments on market shares. However, so far the marketing literature only considers attraction models with certain functional forms that exclude threshold or saturation effects on attraction values.(...)

One of the central goals in finance is to find better models for pricing and hedging financial derivatives such as call and put options. We present a semi-nonparametric approach to risk-neutral density extraction from option prices which is based on an extension of the concept of mixture density...

The marketing literature so far only considers attraction models with strict functional forms. Greater exibility can be achieved by the neural net based approach introduced which assesses brands' attraction values by means of a perceptron with one hidden layer.(...)

We propose the novel constructive approach by which a neuro fuzzy network is built up with the help of a constrained optimizer. The mathematical motivation for such hybrid networks is presented, using the Kolmogorov theory of metric entropy.