%A Ken Murray %A Bruce Porter %J Proc. 6th International Machine Learning Conference %D 1989 %P 290-295 %I Kaufmann %C CA %X Adding new information to an existing knowledge base can have significant consequences. For example, new information might contradict existing knowledge or reveal a "gap" in the knowledge base. Most approaches to knowledge-base refinement either ignore these consequences or compute them exhaustively. Our approach, formalized in a task called knowledge integration, is to partially elaborate the consequences of new information. A form of domain knowledge called `views' controls the search to identify non-superficial consequences of new information. A prototype knowledge integration program has been implemented and demonstrated with a complex extension to a large knowledge base.