%0 Journal Article %A A. S. Valchuk %T Development of a mathematical model of automatic knowledge extraction for a hybrid question-answer system %J Vestnik KRAUNC. Fiziko-matematičeskie nauki %D 2017 %P 76-80 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VKAM_2017_2_a6/ %G ru %F VKAM_2017_2_a6