How do users know what to say?
interactions
What can I say?: evaluating a spoken language interface to Email
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Experiments in spoken document retrieval using phoneme n-grams
Speech Communication - Special issue on accessing information in spoken audio
Vector-based natural language call routing
Computational Linguistics
Towards a tool for the Subjective Assessment of Speech System Interfaces (SASSI)
Natural Language Engineering
An architecture and applications for speech-based accessibility systems
IBM Systems Journal
Promoting extension and reuse in a spoken dialog manager: An evaluation of the queen's communicator
ACM Transactions on Speech and Language Processing (TSLP)
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In our paper, we present evaluation results for VoiceBrowse, an interactive system allowing users to access content and services from the Internet via voice control. We compare two user groups, inexperienced and experienced computer users, regarding their performance and judgment of two versions of the system differing in the dialog initiative. Furthermore we investigate the usability of the systems after long-term usage (simulated by fifteen minutes practise). We find that even inexperienced computer users know from the beginning how to speak to the system, which contrasts assumptions in the related literature. Inexperienced uses perform as good as experienced users with both systems before and after the training. We also compare judgments of the systems before and after the training.