Extraction of important data for cognitive software systems based on data science

In the era of data technologies for medical diagnostic cognitive software systems, new informative data has been obtained based on topological data analysis in the form of Betti numbers. These new, more informative data can be applied to medical diagnostic cognitive software systems and obtain a higher accuracy in the diagnosis of neurodegenerative diseases, which is extremely important, since the choice of a patient's treatment protocol depends on their accuracy. The higher accuracy of the functioning of medical diagnostic cognitive software systems is achieved due to the fact that new informative data are topological data, which in their values take into account the nature of the topological structure of experimentally measured data in the form of electroencephalographic (EEG) signals characterizing the activity of the patient's brain. On the basis of experimental data - EEG signals and methods of data science - topological data analysis, new more informative topological data were obtained for the development of high-precision medical diagnostic cognitive software systems in neurology. The scientific approach is based on the methods and analytical techniques of algebraic topology, in particular, the theory of categories and simplicial geometry (simplicial complexes). In particular, topological data – Betti numbers, obtained on the basis of topological analysis of data on experimentally measured EEG signals of the human brain, represent the number of simplexes with holes of different dimensions of the Vietoris-Rips simplex complex.