5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

Lexical Access for Large-Vocabulary Speech Recognition

Roger Ho-Yin Leung, Hong C. Leung

Chinese University of Hong Kong, Hong Kong

In this paper, the lexical characteristics of two Chinese dialects and American English are explored. Different lexical representations are investigated, including the tonal syllables, base syllables, phonemes, and the broad phonetic classes. Multiple measurements are made, such as coverage, uniqueness, and cohort sizes. Our results are based on lexicons of 44K and 52K words in Chinese and English obtained from the CallHome Corpus and the COMLEX Corpus, respectively. We have found that the set of the most frequent 4,000 words has coverage of 92% and 77% for Chinese and English, respectively. The phonetic representation unique specifies 85%, 87% and 93% of the lexicon for Mandarin, Cantonese, and English, respectively. While the three languages appear quite different when they are described by their full phoneme sets, their characteristics are more similar when they are represented in terms of broad phonetic classes.

Full Paper

Bibliographic reference.  Leung, Roger Ho-Yin / Leung, Hong C. (1998): "Lexical access for large-vocabulary speech recognition", In ICSLP-1998, paper 0229.