Probability and statistics with reliability, queuing and computer science applications
Probability and statistics with reliability, queuing and computer science applications
Stochastic activity networks: formal definitions and concepts
Lectures on formal methods and performance analysis
Basic Concepts and Taxonomy of Dependable and Secure Computing
IEEE Transactions on Dependable and Secure Computing
Collaborative dancing in tele-immersive environment
MULTIMEDIA '06 Proceedings of the 14th annual ACM international conference on Multimedia
A peer-to-peer architecture for massive multiplayer online games
NetGames '06 Proceedings of 5th ACM SIGCOMM workshop on Network and system support for games
On Evaluating the Performability of Degradable Computing Systems
IEEE Transactions on Computers
Quality assessment of interactive voice applications
Computer Networks: The International Journal of Computer and Telecommunications Networking
Implementing a Distributed Tele-immersive System
ISM '08 Proceedings of the 2008 Tenth IEEE International Symposium on Multimedia
Performance and dependability modeling with Möbius
ACM SIGMETRICS Performance Evaluation Review
MM '09 Proceedings of the 17th ACM international conference on Multimedia
Model-Based Approach to Measuring Quality of Experience
EMERGING '09 Proceedings of the 2009 First International Conference on Emerging Network Intelligence
Towards the understanding of human perceptual quality in tele-immersive shared activity
Proceedings of the 3rd Multimedia Systems Conference
Reduced base model construction methods for stochastic activity networks
IEEE Journal on Selected Areas in Communications
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Recent technological advances have made it possible to design bandwidth demanding distributed interactive multimedia applications such as the World Opera application. In this application artists from different opera houses across the globe, can participate in a single united performance and interact almost as if they were co-located. One of the main design challenges in this application domain is to determine the composition of system components necessary to satisfy the desired quality of service in presence of failures and budget constraints. This challenge is exacerbated by the fact that quality of service depends on a multitude of factors such as human perception of video and audio, the type of audience, performance elements, etc. These factors cannot be captured by traditional approaches for dependability evaluation such as reliability, i.e., continuous delivery of correct service. This calls for developing a more comprehensive "Quality of Experience" concept. In this paper, we propose a novel method to assess the quality of experience in presence of failures, based on a new metric called perceived reliability. This method can help the system designers and engineers compare architectural variants and to determine the dependability budget. We show the feasibility of our method by applying it to a World Opera performance. Our experimental results provide useful guidelines for system engineers towards improving the quality of experience of World Opera performances despite presence of failures.