A sequence transformation algorithm for supporting cooperative work on mobile devices
Proceedings of the 2010 ACM conference on Computer supported cooperative work
An algorithm for selective undo of any operation in collaborative applications
Proceedings of the 16th ACM international conference on Supporting group work
Achieving Data Consistency by Contextualization in Web-Based Collaborative Applications
ACM Transactions on Internet Technology (TOIT)
An operational transformation based synchronization protocol for web 2.0 applications
Proceedings of the ACM 2011 conference on Computer supported cooperative work
Context-sensitive trust computing in distributed environments
Knowledge-Based Systems
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Creative conflict resolution in realtime collaborative editing systems
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
A string-wise CRDT for group editing
Proceedings of the 17th ACM international conference on Supporting group work
Guaranteeing Correctness for Collaboration on Documents Using an Optimal Locking Protocol
International Journal of Distributed Systems and Technologies
Dependency-conflict detection in real-time collaborative 3D design systems
Proceedings of the 2013 conference on Computer supported cooperative work
F2FMI: A toolkit for facilitating face-to-face mobile interaction
Expert Systems with Applications: An International Journal
Achieving convergence in operational transformation: conditions, mechanisms and systems
Proceedings of the 17th ACM conference on Computer supported cooperative work & social computing
Exhaustive search of puzzles in operational transformation
Proceedings of the 17th ACM conference on Computer supported cooperative work & social computing
A group Undo/Redo method in 3D collaborative modeling systems with performance evaluation
Journal of Network and Computer Applications
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Operational Transformation (OT) is a consistency maintenance technique for collaborative editing systems—a special class of distributed applications for supporting human-computer-human interaction and collaboration over communication networks. The theory of causality has been the foundation of all prior OT systems, but it is inadequate to meet essential OT requirements in functionality and correctness. In this paper, we analyze the limitation of the causality theory, propose a novel theory of operation context as the new foundation for OT systems, and present a new OT algorithm—Context-based OT (COT)—which provides uniform and efficient solutions to both consistency maintenance and undo problems. The COT algorithm has been implemented and used for supporting a range of novel collaborative applications. The context theory and context vectors are potentially applicable to other distributed computing applications.