Date of Award

2009-01-01

Degree Name

Master of Science

Department

Computational Science

Advisor(s)

Nigel G. Ward

Abstract

Spoken dialog systems today do not vary the prosody of their utterances, although prosody is known to have many useful expressive functions. In a corpus of memory quizzes, I identified eleven dimensions of prosodic variation, each with its own expressive function. I identified the situations in which each was used, and how to detect these situations from the dialog context and the prosody of the interlocutor's previous utterance. I implemented the resulting response rules and had 21 users interact with two versions of the system. Overall they preferred the version in which the prosodic forms of the acknowledgments were chosen to be suitable for each specific context. This suggests that simple adjustments to system prosody based on local context can have value to users.

Language

en

Provenance

Received from ProQuest

File Size

45 pages

File Format

application/pdf

Rights Holder

Rafael Escalante-Ruiz

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