\section{Introduction} Neural networks have become a widely used model as they are relatively easy to build with modern frameworks like tensorflow and are able to model complex data. In this thesis we will .. networks .. In order to get some understanding about the behavior of the learned function of neural networks we examine the convergence behavior for .... An interesting application of neural networks is the application to image classification tasks. We ... impact of ... on the performance of a neural network in such a task. As in some applications such as medical imaging one might be limited to very small training data we study the impact of two measures in improving the accuracy in such a case by trying to ... the model from overfitting the data. %%% Local Variables: %%% mode: latex %%% TeX-master: "main" %%% End: