Spatial and Temporal Reasoning in Geologic Map Interpretation

Reid G. Simmons

In this paper, we describe a way of extending and combining several Al techniques to attack a class of problems exemplified by a problem known as geologic map interpretation. We use both a detailed and an abstract model of elementary geology, combined with both local and global reasoning techniques to achieve the system’s expertise. In particular, a new technique called imagining allows us to find global inconsistencies in our hypotheses by causally simulating a sequence of "instructions." Imagining makes use of both our detailed and abstract models of the world.

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