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
A relaxation method for understanding spontaneous speech utterances
HLT '91 Proceedings of the workshop on Speech and Natural Language
Fragment processing in the DELPHI system
HLT '91 Proceedings of the workshop on Speech and Natural Language
Benchmark tests for the DARPA Spoken Language Program
HLT '93 Proceedings of the workshop on Human Language Technology
A portable approach to last resort parsing and interpretation
HLT '93 Proceedings of the workshop on Human Language Technology
Machine Translation
The Delphi natural language understanding system
ANLC '94 Proceedings of the fourth conference on Applied natural language processing
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This paper presents the Semantic Linker, the fallback component used by the the DELPHI natural language component of the BBN spoken language system HARC. The Semantic Linker is invoked when DELPHI's regular chart-based unification grammar parser is unable to parse an input; it attempts to come up with a semantic interpretation by combining the fragmentary sub-parses left over in the chart using a domain-independent method incorporating general search algorithm driven by empirically determined probabilities and parameter weights. It was used in the DARPA November 92 ATIS evaluation, where it reduced DELPHI's Weighted Error on the NL test by 30% (from 32% to 22%).