Principal concepts of systems fuzzification. Fuzzification of systems for technical and medical practice. I

The paper describes motivation of large variable systems fuzzification the comprehensive language modelling of which, providing unique predictions of future events, may be for theoretical or practical reasons difficult or impossible. Therefore we deal with definitions of simpler sub­ systems which we fuzzify. Modelling language is modified to enable formation of correspondence between predictions and their certainty grades (measures). In the article fundamental presumptions and means of such a modification of the language are introduced. Apart from notions of "fuzzy class" and "fuzzy relation" there are terms as multifuzzification of a class by means of language with time terms (chronology language).