1. A neural network, comprising a plurality of neurons; a plurality of wires adapted for connecting the plurality of neurons, wherein at least a part of the plurality of wires comprises a plurality of input connections and exactly one output connection and/or at least a part of the plurality of wires comprises exactly one input connection and a plurality of output connections; wherein the plurality of neurons are grouped to at least two groups of neurons, wherein the groups of neurons are arranged to define a hierarchic structure; wherein the plurality of wires are grouped to at least two groups of wires as bunches of wires, wherein neurons of a respective group of neurons are connected between two groups of wires; and wherein at least a part of the neurons of a respective group of neurons are interconnected to one another by means of connections.