Indexing and dependency logic for answering english questions

Robert F. Simmons, Sheldon Klein and Keren McConlogue

American Documentation, 1964, vol. 15, issue 3, 196-204

Abstract: This paper describes a computer system which uses a combination of coordinate indexing and structure matching techniques to extract from English questions many criteria which can be used for selecting and recognizing answers. A complete index of all content words in text is first searched to find information‐rich statements which may be answers to the question. Each of these statements is then dependency analyzed to determine if the words (or synonyms) which correspond to question words maintain the dependency relations holding in the question. A simple semantic evaluation of structurally acceptable answers follows. A human editor working with the computer system helps to resolve syntactic ambiguities which are otherwise a major stumbling block in question‐answering systems.

Date: 1964
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https://doi.org/10.1002/asi.5090150306

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