tailieunhanh - Báo cáo khoa học: "How to Parse Gaps in Spoken Utterances"

We describe GLP, a chart parser that will be used as a SYNTAX module of the Erlangen Speech Understanding System. GLP realizes an agenda-based multiprocessing scheme, which allows easily to apply various parsing strategies in a transparent way. We discuss which features have been incorporated into the parser in order to process speech data, in particular the ability to perform direction independent island parsing, to handle gaps in the utterance and its hypothesis scoring scheme. | How to Parse Gaps in Spoken utterances G. Goerz c. Beckstein Univ. Erlangen-Nuernberg RRZE Martensstr. 1 D-8520 Erlangen w. Germany Phone 09131 85-7031 Network GoerziSUMEX ABSTRACT We describe GLP a chart parser that will be used as a SYNTAX module of the Erlangen Speech Understanding System. GLP realizes an agenda-based multiprocessing scheme which allows easily to apply various parsing strategies in a transparent way. We discuss which features have been incorporated into the parser in order to process speech data in particular the ability to perform direction independent island parsing to handle gaps in the utterance and its hypothesis scoring scheme. I. GLP A GENERAL LINGUISTIC PROCESSOR GLP Goerz 1981 1982a b is a multistrategy chart-parser which has special features Bfor the analysis of fragmentary and defective input data as it is the case with speech. GLP a descendant of a version of GSP by M. Kay 1975 has been implemented in InterLISP. It can be used as a stand-alone system to . perform experiments test various parsing strategies or assist in the development of a linguistic data base. While for this purpose it got a cooperative user-friendly interface we also implemented an interface to the Erlangen Speech System Niemann 1982 . The Speech System s architecture is similar to that of HEARSAY-II so that it employs a variety of knowledge sources among which are modules for phonological syntactic semantic and pragmatic analysis. Although the structure of GLP does not limit its ability to perform syntactic analysis only - it is suitable for morphological or the non-inferential part of semantic analysis as well see the similar system UCP Sag-vall-Hein 1982 - its role in the Speech System is constrained to the first mentioned task. II. THE ARCHITECTURE OF GLP AND ITS EXTENSIONS FOR SPEECH ANALYSIS The chart parsing idea was originally conceived and further developed by Martin Kay 1980 . Its basic design extends the Well Formed Substring Table a device used in .

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