A recognizer of meaningful sequences of isolated words spoken in the Italian language is presented. The system has been designed in a modular fashion and the current version has been obtained by adding the syntactic and semantic levels to the isolated-word recognizer previously developed by the same authors. The lexical, syntactic and semantic levels are integrated into a hierarchical knowledge source represented by a transition network grammar. The parsing is directed by the control unit and is performed by means of a combined strategy of bottom-up and top-down techniques, using a modified version of the Earley algorithm. Lexical hypotheses are verified at the phonemic level assigning them a score based on a distance measure evaluated by an error-correcting parsing algorithm. The protocol used in the preliminary experiments is a robot command language.

Syntax and semantics in a word-sequence recognition system

TORASSO, Pietro
1979

Abstract

A recognizer of meaningful sequences of isolated words spoken in the Italian language is presented. The system has been designed in a modular fashion and the current version has been obtained by adding the syntactic and semantic levels to the isolated-word recognizer previously developed by the same authors. The lexical, syntactic and semantic levels are integrated into a hierarchical knowledge source represented by a transition network grammar. The parsing is directed by the control unit and is performed by means of a combined strategy of bottom-up and top-down techniques, using a modified version of the Earley algorithm. Lexical hypotheses are verified at the phonemic level assigning them a score based on a distance measure evaluated by an error-correcting parsing algorithm. The protocol used in the preliminary experiments is a robot command language.
IEEE International Conference on Acoustics, Speech, and Signal Processing
Washington, DC, USA
April 02-04, 1979
Proc. of the IEEE International Conference on Acoustics, Speech, and Signal Processing
IEEE
4
586
590
http://ieeexplore.ieee.org
Silvano Rivoira; Pietro Torasso
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/108042
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