A relational model of data for large shared data banks
Communications of the ACM
Information retrieval using a transportable natural language interface
SIGIR '83 Proceedings of the 6th annual international ACM SIGIR conference on Research and development in information retrieval
English words and data bases: how to bridge the gap
ACL '82 Proceedings of the 20th annual meeting on Association for Computational Linguistics
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A new method is presented for simplifying the logical expressions used to represent utterance meaning in a natural language system. This simplification method utilizes the encoded knowledge and the limited inference-making capability of a taxonomic knowledge representation system to reduce the constituent structure of logical expressions. The specific application is to the problem of mapping expressions of the meaning representation language to a database language capable of retrieving actual responses. Particular account is taken of the model-theoretic aspects of this problem.