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Dimitris Rigas

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Publication statistics

Pub. period:-2008
Pub. count:5
Number of co-authors:2

Co-authors

Number of publications with 3 favourite co-authors:

Mohammad Alsuraihi:4
Marwan Alseid:1

Productive colleagues

Dimitris Rigas's 3 most productive colleagues in number of publications:

Mohammad Alsuraihi:5
Marwan Alseid:1

Calendar

May 20

CTS 2013 - The 2013 Intl. Conf. on Collaboration Techn. and Systems

May 22

Knowing (by) Designing 2013

May 27

13th Intl. Conf. on New Interfaces for Musical Expression

May 18

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Publications by Dimitris Rigas (bibliography)

2008

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Alsuraihi, Mohammad and Rigas, Dimitris (2008): Speech Displaces the Graphical Crowd. In Journal of Computers, 3 (6) pp. 47-58.

“Developers of visual Interface Design Environments (IDEs), like Microsoft Visual Studio and Java NetBeans, are competing in producing pretty crowded graphical interfaces in order to facilitate completion of interface-design tasks. Previous studies have shown that such interfaces cause the user to experience information overload as well as they create a fertile environment for usability problems. In this paper, we empirically investigate speech as an input and output means for solving usability problems with GUI interaction metaphors and enhancing usability of visual IDEs. The empirical investigation aimed at measuring usability of two experimental ID toolkits: typical visual-only (TVOID) and multimodal (MMID) in terms of efficiency, effectiveness and satisfaction. Usability of these two environments was tested twice, over two experimental phases, by four independent groups of users. The first experimental phase was for measuring usability by novel users in order to explore how learnable each of the two experimental toolkits would be. The second phase aimed at measuring usability by well-trained users to study experienced user performance when using a speech recognition ID.”

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Alseid, Marwan and Rigas, Dimitris (2008): Efficiency of Multimodal Metaphors in the Presentation of Learning Information. In: Proceedings of the HCI08 Conference on People and Computers XXII 2008. pp. 107-110.

“The comparative study described in this paper has been conducted to investigate the effect of including multimodal metaphors on the usability of e-learning interfaces. Two independent groups of users were involved to evaluate two different interfaces of an experimental e-learning platform. The control group used the visual only interface that presents information about class diagram notation in textual approach, and the experimental group used the multimodal interface in which a combination of recorded speech sounds, non-speech sounds (earcons), and avatar with simple facial expressions were employed to communicate the same information. Three usability parameters which are efficiency, effectiveness, and users' satisfaction were considered in the study. The scope of this paper is to discuss the results that related to efficiency only, which has been measured by task completion time. It was found that the multimodal interface group taken significantly less time to complete the experimental tasks compared to the visual only interface group. These results encouraged for further exploration to examine the contributing role of each of the applied multimodal metaphors.”

2007

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Alsuraihi, Mohammad and Rigas, Dimitris (2007): Efficiency of Speech Recognition for Using Interface Design Environments by Novel Designers. In: Proceedings of the 7th WSEAS International Conference on Applied Informatics and Communications 2007, Athens, Greece. pp. 154-159.

“Previous studies on usability of graphical design-widgets, like menus and buttons, proposed the use of speech and non-speech (earcons and auditory icons) for solving their usability problems. In this paper we investigate speech as an input metaphor to enhance learnability, or the ability to use a system with no prior knowledge, in order to design interfaces using a multimodal interface design toolkit called MMID. Using this toolkit as an experimental platform, the paper presents an empirical multi-group study that compares efficiency of visual-only and multimodal interaction metaphors when used by novel users.”

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Rigas, Dimitris and Alsuraihi, Mohammad (2007): A Toolkit for Multimodal Interface Design: An Empirical Investigation. In Lecture Notes in Computer Science, 4552 pp. 196-205.

“This paper introduces a comparative multi-group study carried out to investigate the use of multimodal interaction metaphors (visual, oral, and aural) for improving learnability (or usability from first time use) of interface-design environments. An initial survey was used for taking views about the effectiveness and satisfaction of employing speech and speech-recognition for solving some of the common usability problems. Then, the investigation was done empirically by testing the usability parameters: efficiency, effectiveness, and satisfaction of three design-toolkits (TVOID, OFVOID, and MMID) built especially for the study. TVOID and OFVOID interacted with the user visually only using typical and time-saving interaction metaphors. The third environment MMID added another modality through vocal and aural interaction. The results showed that the use of vocal commands and the mouse concurrently for completing tasks from first time use was more efficient and more effective than the use of visual-only interaction metaphors.”

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