NDLI: The impact of hesitation, a social signal, on a user’s quality of experience in multimedia content retrieval

Content Provider	Springer Nature Link
Author	Vodlan, Tomaž Tkalčič, Marko Košir, Andrej
Copyright Year	2014
Abstract	The social signal (SS) of hesitation is commonly manifested through a multiplicity of nonverbal behavioural cues when a user is faced with a variety of decision choices. The aim of this study is to show that the utilization of the SS of hesitation in a conversational recommender system (RS) can improve the user quality of experience (QoE) when interacting with a video-on-demand system. An appropriate experimental design was modelled to detect the impact of the SS. The experimental scenario was a manual video-on-demand system with a conversational RS where the user selected one video clip among several presented on the screen. The system adjusted the list of the video items to be recommended according to the extracted SS class {hesitation, no hesitation}. To detect if the user was hesitating, we used hand movements, eye behaviour and time between two selections. Two user groups were tested to allow realistic estimation of the impact of the SS. In the user test group, the SS of hesitation was considered, while in the control group it was not. The evaluation of impact of the SS on QoE was based on pre- and post-interaction questionnaires. Our results showed a significant difference in user satisfaction with the system between those two groups, indicating that the use of SS of hesitation in conversational RS improves the QoE when the user interacts with a video-on-demand system.
Starting Page	6871
Ending Page	6896
Page Count	26
File Format	PDF
ISSN	13807501
Journal	Multimedia Tools and Applications
Volume Number	74
Issue Number	17
e-ISSN	15737721
Language	English
Publisher	Springer US
Publisher Date	2014-03-19
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Social signals Hesitation Human–computer interaction Video-on-demand Recommender system Multimedia Information Systems Computer Communication Networks Data Structures, Cryptology and Information Theory Special Purpose and Application-Based Systems
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software Media Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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