Browsing by Subject "real-time"
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- Journal ArticleA Multi-Versioning Scheme for Intention Preservation in Collaborative Editing Systems*(Computer Supported Cooperative Work (CSCW): Vol. 17, 2008) Xue, Liyin; Orgun, Mehmet A.; Zhang, KangAlthough the multi-version approach to consistency maintenance has been widely discussed and implemented in database systems, version control systems, and asynchronous groupware systems, its potential in real-time groupware systems is largely unexplored. Intention preservation is an important aspect of consistency maintenance in real-time collaborative editing systems, where multiple users cooperate with each other by concurrently editing the same document. The multi-version approach is supposed to be able to preserve individual users’ concurrent conflicting intentions. In this article, we propose a new multi-versioning scheme that can preserve not only concurrent conflicting intentions but also contextual intentions while achieving convergence of the document under editing. By extending an existing multi-versioning scheme to a general one that specifies the conditions for convergence, we decouple the discussion of convergence from that of intention preservation. By constraining the general scheme, we arrive at the novel scheme that guarantees to preserve users’ intentions. The correctness of the scheme has been formally verified. The design of an algorithm for consistent version composition and identification has been discussed in detail.
- Text DocumentATCoPE: Any-Time Collaborative Programming Environment for Seamless Integration of Real-Time and Non-Real-Time Teamwork in Software Development(Proceedings of the 2012 ACM International Conference on Supporting Group Work, 2012) Fan, Hongfei; Sun, Chengzheng; Shen, HaifengReal-time collaborative programming and non-real-time collaborative programming are two classes of methods and techniques for supporting programmers to jointly conduct complex programming work in software development. They are complementary to each other, and both are useful and effective under different programming circumstances. However, most existing programming tools and environments have been designed for supporting only one of them, and little has been done to provide integrated support for both. In this paper, we contribute a novel Any-Time Collaborative Programming Environment (ATCoPE) to seamlessly integrate conventional non-real-time collaborative programming tools and environments with emerging real-time collaborative programming techniques and support collaborating programmers to work in and flexibly switch among different collaboration modes according to their needs. We present the general design objectives for ATCoPE, the system architecture, functional design and specifications, rationales beyond design decisions, and major technical issues and solutions in detail, as well as a proof-of-concept implementation of the ATCoEclipse prototype system.