Memorias de investigación
Research Publications in journals:
Non-verbal communication strategies to improve robustness in dialogue systems: a comparative study
Year:2010

Research Areas
  • Processing and signal analysis

Information
Abstract
This paper explores the use of embodied conversational agents (ECAs) and their visual communicative ability to improve interaction with spoken language dialogue systems (SLDSs) through an experimental case study in the application context of secure access by speaker verification followed by remote home automation control. After identifying a set of typical interaction problems with SLDSs and associated with each of them a particular ECA gesture or behaviour, we conducted a comparative evaluation based on ITU recommendations for the evaluation of spoken dialogue systems. User tests were carried out dividing the test users into two groups, each facing a different interface setup: one with an ECA, and the other only with voice output. The ECA group encountered fewer interaction problems. Users¿ impressions, however, were similar in both groups, with a slight advantage observed for the ECA group. In particular, the ECA seems to help users to better understand the flow of the dialogue and reduce confusion. Results also suggest that rejection (based on privacy and security concerns) is a dimension in its own right that may influence subjective evaluation parameters closely related to user acceptance.
International
Si
JCR
No
Title
Journal on Multimodal User Interfaces
ISBN
1783-7677
Impact factor JCR
0
Impact info
Volume
3
10.1007/ s12193-010-0052-2
Journal number
4
From page
285
To page
297
Month
NOVIEMBRE
Ranking
Participants
  • Autor: David Díaz Pardo UPM
  • Autor: Beatriz López Mencia UPM
  • Autor: Álvaro Hernández Trapote UPM
  • Autor: Luis Alfonso Hernandez Gomez UPM

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Aplicaciones del Procesado de Señal (GAPS)