The mapping unit approach to subcategorization
HLT '91 Proceedings of the workshop on Speech and Natural Language
A template matcher for robust NL interpretation
HLT '91 Proceedings of the workshop on Speech and Natural Language
HLT '91 Proceedings of the workshop on Speech and Natural Language
Syntactic/semantic coupling in the BBN DELPHI system
HLT '91 Proceedings of the workshop on Speech and Natural Language
Spoken dialogue technology: enabling the conversational user interface
ACM Computing Surveys (CSUR)
The Delphi natural language understanding system
ANLC '94 Proceedings of the fourth conference on Applied natural language processing
Gemini: a natural language system for spoken-language understanding
ACL '93 Proceedings of the 31st annual meeting on Association for Computational Linguistics
BBN BYBLOS and HARC February 1992 ATIS benchmark results
HLT '91 Proceedings of the workshop on Speech and Natural Language
A portable approach to last resort parsing and interpretation
HLT '93 Proceedings of the workshop on Human Language Technology
The Semantic Linker: a new fragment combining method
HLT '93 Proceedings of the workshop on Human Language Technology
Gemini: a natural language system for spoken-language understanding
HLT '93 Proceedings of the workshop on Human Language Technology
Learning speech semantics with keyword classification trees
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
The BBN/HARC spoken language understanding system
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
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This paper presents the fallback understanding component of BBN's DELPHI NL sysystem. This component is invoked when the core DELPHI system is unable to understand an input. It incorporates both syntax- and frame-based fragment combination sub-components, in an attempt to provide a smoother path from accurate but fragile conventional parsers on the one hand to the robust but less accurate schema-based methods on the other. The frame-based sub-component is fully integrated with the DELPHI's core grammar and parser, and represents an advance over previous proposals.The complete fallback understanding component, incorporating both sub-components, was used in the February 1992 NL and SLS evaluations of the DELPHI system and we report on its contribution to these results, and those of its two separate sub-components. For SLS, use of the frame-based sub-component alone resulted in a figure 39.2% Weighted Error---signifigantly lower than our lowest official score of 43.7% Weighted Error.