Abstract
This chapter discusses that a Japanese text dictation system has been developed based on phoneme recognition and a dependency grammar. The phoneme recognition is carried out using the modified LVQ2 method which is proposed in the chapter. The linguistic processor is composed of a processor for spotting Bunsetsu-units and a syntactic processor with semantic constraints. In the processor for spotting Bunsetsu-units, using a syntax-driven continuous-DP matching algorithm, the Bunsetsu-units are spotted from a recognized phoneme sequence and then a Bunsetsu-unit lattice is generated. In the syntactic processor, the Bunsetsu-unit lattice is parsed based on the dependency grammar. The dependency grammar is expressed as the correspondence between a feature marker in a modifier-Bunsetsu and a slot-filler marker in a head-Bunsetsu. The recognition scores of the Bunsetsu-unit and phoneme were 73.2% and 86.1% for 226 sentences uttered by two male speakers.
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