Software framework for managing heterogeneity in mobile collaborative systems

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Software framework for managing heterogeneity in mobile collaborative systems (2004)

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by Carlos D. Correa , Ivan Marsic

Venue:	CSCW
Citations:	3 - 0 self

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@ARTICLE{Correa04softwareframework,
    author = {Carlos D. Correa and Ivan Marsic},
    title = {Software framework for managing heterogeneity in mobile collaborative systems},
    journal = {CSCW},
    year = {2004},
    pages = {5--6}
}

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Abstract

Abstract. Heterogeneity in mobile computing devices and application scenarios complicates the development of collaborative software systems. Heterogeneity includes disparate computing and communication capabilities, differences in users ’ needs and interests, and semantic conflicts across different domains and representations. In this paper, we describe a software framework that supports mobile collaboration by managing several aspects of heterogeneity. Adopting graph as a common data structure for the application state representation enables us to develop a generic solution for handling the heterogeneities. The effect external forces, such as resource constraints and diverging user interests, can be quantified and controlled as relational and attribute heterogeneity of state graphs. When mapping the distributed replicas of the application state, the external forces inflict a loss of graph information, resulting in many-to-one correspondences of graph elements. A key requirement for meaningful collaboration is maintaining a consistent shared state across the collaborating sites. Our framework makes the best of maximizing the state consistency, while accommodating the external force constraints, primarily the efficient use of scarce system resources. Furthermore, we describe the mobility aspects of our framework, mainly its extension to peer-to-peer scenarios and situations of intermittent connectivity. We describe an implementation of our framework applied to the interoperation of shared graphics editors across multiple platforms, where users are able to share 2D and 3D virtual environments represented as XML documents. We also present performance results, namely resource efficiency and latency, which demonstrate its feasibility for mobile scenarios. Key words: collaborative systems, consistency maintenance, content adaptation, mobile computing, scene simplification

Keyphrases

software framework mobile collaborative system effect external force many-to-one correspondence scarce system resource disparate computing scene simplification resource efficiency consistency maintenance collaborative software system collaborating site resource constraint common data structure attribute heterogeneity external force semantic conflict mobile collaboration content adaptation peer-to-peer scenario distributed replica different domain communication capability meaningful collaboration mobile scenario collaborative system mobility aspect key requirement user need application state representation application scenario several aspect key word virtual environment state consistency multiple platform xml document present performance result efficient use state graph user interest intermittent connectivity mobile computing external force constraint graphic editor application state graph information generic solution graph element

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