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<p>The development of a knowledge base of biological research papers that supports the Scientist's Assistant, an intelligent system that will provide a scientist with interactive access to the research results, methods, and reasoning in a collection of scientific papers, is discussed. The document understanding system uses graphics constraint grammars for describing and analyzing diagrams, spatial indexing in diagram analysis and understanding, and extension of natural-language processing techniques to complex scientific text. The graphics constraint grammars of the diagram-understanding system are described in detail. Example diagrams and grammars are presented.</p>
Joseph M. Futrelle, Robert P. Futrelle, Niko Nikolakis, Jeff Alexander, Catherine M. Carriero, Ioannis A. Kakadiaris, "Understanding Diagrams in Technical Documents", Computer, vol. 25, no. , pp. 75-78, July 1992, doi:10.1109/2.144445
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