Using A Physical Metaphor To Scale Up Communication In Virtual Worlds


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Using a Physical Metaphor to Scale Up Communication in Virtual Worlds


Using a Physical Metaphor to Scale Up Communication in Virtual Worlds

Author: Daniel Reiter Horn

language: en

Publisher: Stanford University

Release Date: 2011


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This dissertation argues that application-level messaging in virtual worlds must have five properties to enable scalability while avoiding the undesirable limitations of existing systems: recipient selection, minimum quality of service, graceful degradation, fine-grained multiplexing and high utilization. To address these issues, the Sirikata system architecture, a new virtual world back-end system, was developed that achieves these five properties. Sirikata's key insight is to leverage the geometric nature of virtual worlds by applying a physical metaphor to communication. Object communication follows an inverse square law, behaving similarly to point-source radio transmitters and receivers. The theoretical scalability results are proven, and some valid approximations are investigated. Then an implementation of a message forwarder that supports a large number of objects and prioritizes traffic using such an inverse square falloff is introduced. Evaluations of Sirikata show that it satisfies the stated requirements, performs better than current virtual worlds, and can closely follow the real-world radio communication analogy. Finally, a range of sample application demonstrates the effectiveness of this approach. Each sample application is coded in the world and studied when the system is loaded.

Using a Physical Metaphor to Scale Up Communication in Virtual Worlds


Using a Physical Metaphor to Scale Up Communication in Virtual Worlds

Author: Daniel Reiter Horn

language: en

Publisher:

Release Date: 2011


DOWNLOAD





This dissertation argues that application-level messaging in virtual worlds must have five properties to enable scalability while avoiding the undesirable limitations of existing systems: recipient selection, minimum quality of service, graceful degradation, fine-grained multiplexing and high utilization. To address these issues, the Sirikata system architecture, a new virtual world back-end system, was developed that achieves these five properties. Sirikata's key insight is to leverage the geometric nature of virtual worlds by applying a physical metaphor to communication. Object communication follows an inverse square law, behaving similarly to point-source radio transmitters and receivers. The theoretical scalability results are proven, and some valid approximations are investigated. Then an implementation of a message forwarder that supports a large number of objects and prioritizes traffic using such an inverse square falloff is introduced. Evaluations of Sirikata show that it satisfies the stated requirements, performs better than current virtual worlds, and can closely follow the real-world radio communication analogy. Finally, a range of sample application demonstrates the effectiveness of this approach. Each sample application is coded in the world and studied when the system is loaded.

Art and Technology of Entertainment Computing and Communication


Art and Technology of Entertainment Computing and Communication

Author: Adrian David Cheok

language: en

Publisher: Springer Science & Business Media

Release Date: 2010-08-03


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Art and Technology of Entertainment Computing and Communication takes a blue sky research perspective on the field of interactive media for entertainment computing. Adrian David Cheok argues that entertainment as an end-product is useful for interactive play, however it is also a powerful tool for learning and communication and it is also a key driver for the development of information technology. This book explores the future of entertainment technologies used for communication and describes quantum step research. It will inform and inspire readers to create their own radical inventions and innovations that are not incremental, but which break through ideas and non-obvious solutions. One of the main explorations is the examination of how new forms of computer interaction can lead to radical new forms of technology and art for entertainment computing. Art and Technology of Entertainment Computing and Communication is an informative and inspirational text for students and the next generation of researchers. It’s main aim is to provide information that will hopefully help change the world and society for the better, through new modes of entertainment and communication. Academics, researchers, engineers, game designers, and interaction designers, will find the content both interesting and valuable. Entertainment is the "engine" to inspire people and drive innovation in interactive digital media design. The pioneer of the field, Prof. Adrian David Cheok, takes you on an exciting tour of the future shaped by the Entertainment Technologies. Hiroshi ISHII, Muriel R. Cooper Professor of Media Arts and Sciences, MIT Media Laboratory.