A method for the use of fractal semantic networks is disclosed, wherein the fractal semantic network contains both semantic units that possess respective information contents as well as link units that describe a relation content that respectively links two semantic units such that the mutual relationship of the two linked semantic units is determined through the relation content. In that case, a knowledge network consists of category units and, as the case may be, additionally of instance units and/or Janus units. For the querying of information, classification and/or selecting of semantic sub-networks in this knowledge network, the networking of semantic units taking into consideration the type, content, composition and/or distance of other semantic units in the respective network environment can be employed. Furthermore, Janus functionality can be employed for the local classification or for the local alteration of the networking of a semantic unit.