Abstract: Disclosed is a processing apparatus capable of optimizing its rule base comprising a plurality of rules having an antecedent and a consequent each. The antecedent contains input conditions of machining, and the consequent describes the result of machining. The antecedents are applied to input condition data. The consequents of the applied rules yield machining result data that are evaluated for rule fitness. When the rule base is updated, some rules are deleted and some preserved depending on their degrees of fitness. Between given two rules having the same consequent, any number of corresponding conditional elements in their antecedents are exchanged so as to generate new rules. The process is repeated until the rule base is optimized. With the antecedents of rules applied to input condition data and with the consequents of the applied rules yielding machining result data, those data may be modified according to modification request data.

Abstract: A suspension for vehicles which includes a rod supporting on one end thereof a wheel and pivotally connected at the other end thereof to one end of each of a pair of links. The other ends of the links are pivotally connected to a chassis portion or the wheel of the vehicle. The pair of links are relatively inclined at a predetermined angle, so that the rod is operable as if the link-connected end thereof was disposed at an intersection of the longitudinal axes of the links. With such relatively non-complex structure, the vehicle can be prevented from diving at its front end or from rising at its rear end when the vehicle is suddenly braked.