Second International Conference on Spoken Language Processing (ICSLP'92)
Banff, Alberta, Canada
We attempt to explain a decrease in recognition word error rate observed when users interacted over time with a spoken language system. We found no change in the language used (as measured by sentence perplexity), and only a small decrease in the number of out-of-vocabulary words. However, a behavior adversely affecting recognition, hyperarticulation, decreased over time. In addition, the acoustic match of hyper-articulated utterances to the system models also improved over time. We conclude that improvement in recognition was due to changes in speech rather than in language.
Bibliographic reference. Wade, Elizabeth / Shriberg, Elizabeth / Price, Patti (1992): "User behaviors affecting speech recognition", In ICSLP-1992, 995-998.