The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
Database abstractions: aggregation and generalization
ACM Transactions on Database Systems (TODS)
Extended semantics for generalization hierarchies
SIGMOD '78 Proceedings of the 1978 ACM SIGMOD international conference on management of data
Generating natural language text in response to questions about database structure
Generating natural language text in response to questions about database structure
The TEXT system for natural language generation: an overview
ACL '82 Proceedings of the 20th annual meeting on Association for Computational Linguistics
Summarizing natural language database responses
Computational Linguistics
Providing Quality Responses with Natural Language Interfaces: The Null Value Problem
IEEE Transactions on Software Engineering
A response to the need for summary responses
ACL '84 Proceedings of the 10th International Conference on Computational Linguistics and 22nd annual meeting on Association for Computational Linguistics
The TEXT system for natural language generation: an overview
ACL '82 Proceedings of the 20th annual meeting on Association for Computational Linguistics
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The knowledge representation is an important factor in natural language generation since it limits the semantic capabilities of the generation system. This paper identifies several information types in a knowledge representation that can be used to generate meaningful responses to questions about database structure. Creating such a knowledge representation, however, is a long and tedious process. A system is presented which uses the contents of the database to form part of this knowledge representation automatically. It employs three types of world knowledge axioms to ensure that the representation formed is meaningful and contains salient information.