PARSEC: a connectionist learning architecture for parsing spoken language

Abstract: "A great deal of research has been done developing parsers for natural language, but adequate solutions for some of the particular problems involved in spoken language are still in their infancy. Among the unsolved problems are: difficulty in constructing task- specific grammars, lack...

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1. Verfasser: Jain, Ajay N. (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: Pittsburgh, Pa. School of Computer Science, Carnegie Mellon Univ. 1991
Schriftenreihe:School of Computer Science <Pittsburgh, Pa.>: CMU-CS 1991,208
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Zusammenfassung:Abstract: "A great deal of research has been done developing parsers for natural language, but adequate solutions for some of the particular problems involved in spoken language are still in their infancy. Among the unsolved problems are: difficulty in constructing task- specific grammars, lack of tolerance to noisy input, and inability to effectively utilize complimentary non-symbolic information. This thesis describes PARSEC -- a system for generating connectionist parsing networks from example parses. PARSEC networks exhibit three strengths: They automatically learn to parse, and they generalize well compared to hand- coded grammars
They tolerate several types of noise without any explicit noise- modeling. They can learn to use multi-modal input, e.g. a combination of intonation, syntax and semantics. The PARSEC network architecture relies on a variation of supervised back-propagation learning. The architecture differs from other connectionist approaches in that it is highly structured, both at the macroscopic level of modules, and at the microscopic level of connections. Structure is exploited to enhance system performance. Conference registration dialogs formed the primary development testbed for PARSEC. A separate simultaneous effort in speech recognition and translation for conference registration provided a useful data source for performance comparisons
Presented in this thesis are the PARSEC architecture, its training algorithms, and detailed performance analyses along several dimensions that concretely demonstrate PARSEC's advantages.
Beschreibung:Zugl.: Pittsburgh, Pa., Univ., Diss., 1992
Beschreibung:XVI, 164 S. graph. Darst.