1. A method for loading information into a memory section of an electronic controller which performs inference operations according to rules, each rule comprising at least one preposition and at least one implication, wherein a number of membership functions are defined for a finite number of points within a universe of discourse, the method comprising the steps of: providing values of the membership functions appearing in the preposition of at least one of the rules, each value being indicative of a degree of membership; and storing in the memory section, for each of the finite number of points, the values of only those membership functions for the point which are not zero.