Management of large amounts of data in interactive building walkthroughs
I3D '92 Proceedings of the 1992 symposium on Interactive 3D graphics
MASSIVE: a collaborative virtual environment for teleconferencing
ACM Transactions on Computer-Human Interaction (TOCHI) - Special issue on virtual reality software and technology
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Multi-resolution model transmission in distributed virtual environments
VRST '98 Proceedings of the ACM symposium on Virtual reality software and technology
VRST '00 Proceedings of the ACM symposium on Virtual reality software and technology
A Taxonomy for Networked Virtual Environments
IEEE MultiMedia
Global Memory Management in Client-Server Database Architectures
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
A Network Architecture for Remote Rendering
DIS-RT '98 Proceedings of the Second International Workshop on Distributed Interactive Simulation and Real-Time Applications
The QUICK Framework for Task-Specific Asset Prioritization in Distributed Virtual Environments
VR '00 Proceedings of the IEEE Virtual Reality 2000 Conference
Extending Locales: Awareness Management in MASSIVE-3
VR '00 Proceedings of the IEEE Virtual Reality 2000 Conference
ATLAS: a scalable network framework for distributed virtual environments
Proceedings of the 4th international conference on Collaborative virtual environments
Intelligent cache management for data grid
ACSW Frontiers '05 Proceedings of the 2005 Australasian workshop on Grid computing and e-research - Volume 44
ATLAS: A Scalable Network Framework for Distributed Virtual Environments
Presence: Teleoperators and Virtual Environments
A Context-Aware AR Navigation System Using Wearable Sensors
Proceedings of the 13th International Conference on Human-Computer Interaction. Part III: Ubiquitous and Intelligent Interaction
Avatar mobility in user-created networked virtual worlds: measurements, analysis, and implications
Multimedia Tools and Applications
Networked Graphics: Building Networked Games and Virtual Environments
Networked Graphics: Building Networked Games and Virtual Environments
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For supporting real-time interaction in distributed virtual environments (DVEs), it is common to replicate virtual world data at clients from the server. For efficient replication, two schemes are used together in general - prioritized transfer of objects and a caching and prefetching technique. Existing caching and prefetching approaches for DVEs exploit spatial relationship based on distances between a user and objects. However, spatial relationship fails to determine which types of objects are more important to an individual user, not reflecting user's interests. We propose a scalable data management scheme using user-based caching and prefetching exploiting the object's access priority generated from spatial distance and individual user's interest in objects in DVEs. We also further improve the cache hit rate by incorporating user's navigation behavior into the spatial relationship between a user and the objects in the cache. By combining the interest score and popularity score of an object with the spatial relationship, we improve the performance of caching and prefetching since the interaction locality between the user and objects are reflected in addition to spatial locality. The simulation results show that the proposed scheme outperforms the hit rate of existing caching and prefetching by 10% on average when the cache size is set to basic cache size, the size of expected number of objects included in the user's viewing range.