Given two closure spaces (E,j) and (E',j'), a relation R inclue dans E x E' is said biclosed if every row of its matrix representation corresponds t o a closed subset of E', and every column to a closed subset of E. An isomorphism between, on the one hand, the set of all biclosed relations and,...

Dans ce papier, nous presentons un certain nombre de techniques qui peuvent etre derivees de l'algorithme de Kohonen, telles que la representation des contenus des classes, la visualisation des distances entre les classes, une rapide et robuste classification a deux niveaux emboites bases sur...