14. A knowledge information processing method in an information processing system which as processing means, memory means, and input/output means comprising the steps of: storing meta-knowledge for acquisition of knowledge having knowledge structure information of a part which should not be altered after defined and of an alterable part; and acquiring new knowledge utilizing stored meta-knowledge.
15. The knowledge information processing method of claim 14 further comprising the step of acquiring knowledge to alter said alterable part of said meta-knowledge.