OTEKS software applies original algorithms, oriented to specialities of real experimental and statistical data tables and focused on specifics of human perception and information treatment abilities. In particular, it is established, that under «manual» grouping a man pays attention not only to absolute distance between objects, but to their position in relation to neighbouring objects as well. The hypothesis of l-compactness based on this effect creates the new generation of data analysis methods. The man is not able to accept the solutions presented in a too complicated form. Account of these limitations had led to the development of new algorithms for presentation of complex results in the understandable form, easy for perception. The measures, directed to increase the solution stability under low volume of teaching set, are provided.