In this paper a methodology of knowledge integration is presented together with some experimental results. The goal of this method is the integration into a single theory of the knowledge obtained by different 'learning agents' . We state that this methodology can also be seen as a way to forget useless parts of theories. We briefly describe how this could be done in two different learning scenarios :- single-agent and multi-agent learning environments.
Keywords : Concept learning, knowledge integration, forgetting, single-agent learning, multi-agent learning.