11 An Approach to the Frame Problem, and its Implementation E. Sandewall

The frame problem in representing natural-language information is discussed. It is argued that the problem is not restricted to problem-solving-type situations, in which it has mostly been studied so far, but also has a broader significance. A new solution to the frame problem, which arose within a larger system for representing natural-language information, is described. The basic idea is to extend the predicate calculus notation with a special operator, Unless, with peculiar properties. Some difficulties with Unless are described. THE FRAME PROBLEM This paper proposes a method for handling the frame problem in representing conceptual, or natural-language-type information.