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Qualitative Structural Analysis Using Diagrammatic Reasoning

Diagrammatic reasoning is a type of reasoning in which the primary means of inference is direct manipulation and inspection of a diagram. Diagrammatic reasoning is prevalent in human problem solving behavior, especially for problems involving spatial relations among physical objects. Our research examines the relationship between diagrammatic and symbolic reasoning in a computational framework. We have built a system, called REDRAW, that emulates the human capability for reasoning with pictures in civil engineering. The class of structural analysis problems chosen provides a realistic domain whose solution process requires domain-specific knowledge as well as pictorial reasoning skills. We hypothesize that diagrammatic representations provide an environment where inferences about the physical results of proposed structural configurations can take place in a more intuitive manner than that possible through purely symbolic representations.