Paper: Non-Native Users In The Let's Go!! Spoken Dialogue System: Dealing With Linguistic Mismatch

ACL ID N04-1028
Title Non-Native Users In The Let's Go!! Spoken Dialogue System: Dealing With Linguistic Mismatch
Venue Human Language Technologies
Session Main Conference
Year 2004
Authors

This paper describes the CMU Let’s Go!! bus information system, an experimental system designed to study the use of spoken dialogue interfaces by non-native speakers. The differ- ences in performance of the speech recogni- tion and language understanding modules of the system when confronted with native and non-native spontaneous speech are analyzed. Focus is placed on the linguistic mismatch be- tween the user input and the system’s expecta- tions, and on its implications in terms of lan- guage modeling and parsing performance. The effect of including non-native data when build- ing the speech recognition and language under- standing modules is discussed. In order to close the gap between non-native and native input, a method is proposed to automatically generate confirmation prompts ...