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Title: Operational transformation for orthogonal conflict resolution in real-time collaborative 2D editing systems
Authors: Sun, Chengzheng
Wen, Hongkai
Fan, Hongfei
Issue Date: 2012
Source: Sun, C., Wen, H., & Fan, H. (2012). Operational transformation for orthogonal conflict resolution in real-time collaborative 2d editing systems. Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work - CSCW '12, 1391-1400.
Abstract: Operational Transformation (OT) is commonly used for conflict resolution in real-time collaborative applications, but none of existing OT techniques is able to solve a special type of conflict - orthogonal conflict, which may occur when concurrent operations are inserting/deleting an arbitrary number of objects in different dimensions of a two-dimensional (2D) workspace, such as spreadsheet documents. This paper is the first to identify and solve the orthogonal conflict problem by extending OT with a new capability of resolving 2D conflicts. Extending OT from one- to two-dimensional conflict resolution is fundamental to the theory and application of OT, and technically challenging as well because 2D orthogonal conflict is different from but intimately related to the one-dimensional positional shifting conflict and necessitates new and integral solutions for multi-dimensional conflicts. In this paper, we present formal definitions of orthogonal conflict, pseudo-code description, design rationale analysis, and correctness verification and complexity analysis of the 2DOT solution.
DOI: 10.1145/2145204.2145411
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCSE Conference Papers

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