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Developing an EBL bypass for a large-scale natural language query interface to relational data bases

Samuelsson, Christer and Rayner, Manny (1991) Developing an EBL bypass for a large-scale natural language query interface to relational data bases. [SICS Report]

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Abstract

The syntactic analysis component of a large-scale natural language query interface to relational data bases was greatly sped up by applying explanation-based learning(EBL), a machine learning technique. The idea is that one for most input queries can bypass the ordinary parser, instead using a set of learned rules. When no rule applies, one must pay the price of a small overhead. The set of learned rules is extracted automatically from sample queries posed by a user, thus tuning the system for that particular user. Several non-trivial problems, arising from the characteristics of the target system, were solved during the project. Measurements on a small test corpus indicated that the speed-ups when a learned rule could be used are on average a factor 30 and that the overhead, when no rule applied, is less than 3 percent.

Item Type:SICS Report
Additional Information:Extended version of a paper titled "Using Explanation-Based Learning to Increase Performance in a Large-Scale NL Query System" by the same authors, that was presented at the third DARPA Workshop on Speech and Natural Language, Hidden Valley, 1991. Original report number R91001.
ID Code:2512
Deposited By:Vicki Carleson
Deposited On:22 Oct 2009
Last Modified:18 Nov 2009 16:09

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