Neural networks are widely applied in research and industry. However, their broader application is hampered by various technical details. Among these details are several training parameters and the choice of the topology of the network. The subject of this dissertation is therefore the elimination and determination of usually user specified learning parameters. Furthermore, suitable application domains for neural networks are discussed. Among all training parameters, special attention is given to the learning rate, the gain of the sigmoidal function, and the initial weight range. A theorem is proven which permits the elimination of one of these parameters. Furthermore, it is shown that for high order perceptrons, very small random initial w...