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Sixth International Conference on Spoken Language Processing
(ICSLP 2000)
Beijing, China
October 16-20, 2000 |
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Effects of Dialog Initiative and Multi-Modal Presentation Strategies on Large Directory Information Access
Shrikanth Narayanan, Gioseppe Di Fabbrizio, C. Kamm, James Hubbell (1), B. Buntschuh (2), P. Ruscitti, J. Wright
AT&T Labs - Research, Florham Park, NJ, USA
(1) Now at Human Factors International;
(2) now with TellMe Networks
This paper compares the effects of three different dialog
initiative strategies (system initiative, mixed initiative and
user initiative) on system performance and user acceptance
on a large directory information access task. We used a
personnel directory query application that could be
accessed from a voice-only (telephony) and a multi-modal
(kiosk) interface. Although the user initiative condition
resulted in a lower proportion of in-grammar utterances, no
significant effects of dialog initiative were observed for
concept accuracy, perceived task completion, ease of use
or user satisfaction. Dialogs were significantly shorter with
the kiosk interface than with the telephony interface, and
users preferred the kiosk interface and found it easier to
use.
Full Paper
Bibliographic reference.
Narayanan, Shrikanth / Fabbrizio, Giuseppe Di / Kamm, C. / Hubbell, James / Buntschuh, B. / Ruscitti, P. / Wright, J. (2000):
"Effects of dialog initiative and multi-modal presentation strategies on large directory information access",
In ICSLP-2000, vol.2, 636-639.