Discussion of methodologies for the semantic integration of databases focuses on formalizing the notion of schema equivalence and the schema integration process. Topics include common data model; the Entity-Relationship (ER)model; transformation of ER models; transformational, mapping, and behavioral schema equivalence; and knowledge-based…

At present a computer system cannot be constructed for handling the totality of a natural language in any significant way. It is, however, possible to construct a system for communication in a narrow field of discourse. A working model for a specialized discourse based on a recognition grammar is discussed. Some properties of the recognition…

Two accomplishments have increased the feasibility of taking preparatory steps for the construction of machine intelligence systems which can acquire knowledge about facts or descriptions of facts through man-machine dialogue in the user's natural language. One is a better understanding of the relationship between perception, language, and…