WYSIWIS revised: early experiences with multiuser interfaces
ACM Transactions on Information Systems (TOIS)
Rendezvous: an architecture for synchronous multi-user applications
CSCW '90 Proceedings of the 1990 ACM conference on Computer-supported cooperative work
MMConf: an infrastructure for building shared multimedia applications
CSCW '90 Proceedings of the 1990 ACM conference on Computer-supported cooperative work
The abstraction-link-view paradigm: using constraints to connect user interfaces to applications
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A collaborative medium for the support of conversational props
CSCW '92 Proceedings of the 1992 ACM conference on Computer-supported cooperative work
The Rendezvous language and architecture
Communications of the ACM
The VIEP system: interacting with collaborative multimedia
Proceedings of the 9th annual ACM symposium on User interface software and technology
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We describe a scalable CSCW infrastructure designed to handle heavy-weight data sets, such as extremely large images and video. Scalability is achieved through exclusive use of reliable and unreliable multicast protocols. The infrastructure uses a replicated architecture rather than a centralized architecture, both to reduce latency and to improve responsiveness. Use of 1) reliable (multicast) transport of absolute, rather than relative, information sets, 2) time stamps, and 3) a last-in-wins policy provide coherency often lacking in replicated architectures. The infrastructure allows users to toggle between WYSIWIS and non-WYSIWIS modes. That, coupled with effective use of multicast groups, allows greatly improved responsiveness and performance for managing heavy-weight data.