Abstract
In modern science, classifications occupy a special place. In many areas of knowledge, they are the canonized type of product of scientific activity. That is why all the information obtained by the researchers tends to formulate in the form of those or other classifications of the investigated objects themselves, their separately considered properties, composition, structure, genesis, placement, etc. However, the quality of already built classifications, as a rule, does not suit the specialists. When creating the same new, there are numerous difficulties, which are impossible to overcome, because there are no theoretical and methodological means. The development of these tools is complicated by the lack of clarity of the very concept of classification, the lack of clear notions of classification as a special phenomenon of knowledge.