00750naa#a2200217#i#450# EN\\bibl\128593 20260721122252.2 2218-130X 20260709b2026####ek#y0engy0150####ca RU PRESENCE FUNCTION AS A MECHANISM FOR CORRECT HANDLING OF MISSING VALUES IN FUZZY DATA MINING Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2026 11 с. Journal article local Эффективность. 004.051 Maksimova Elena A. Utesheva Gulnara Sh. Gromov Yuriy Yu. Karasev Pavel I. Starodubov Konstantin V. journals.igps.ru