The parting of the ways: divergence, data management and collaborative work

  • Authors:
  • Paul Dourish

  • Affiliations:
  • Rank Xerox Research Centre, Cambridge Laboratory (EuroPARC) and Dept of Computer Science, University College, London

  • Venue:
  • ECSCW'95 Proceedings of the fourth conference on European Conference on Computer-Supported Cooperative Work
  • Year:
  • 1995

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Abstract

Systems coordinating distributed collaborative work must manage user data distributed over a network. The strong consistency algorithms which designers have typically borrowed from the distributed systems community are often unsuited to the particular needs of CSCW. Here, I outline an alternative approach based on divergence and synchronisation between parallel streams of activity. From a CSCW perspective, this strategy offers three primary advantages. First, it is scalable, allowing smooth transitions from highly interactive collaboration to-more extended, "asynchronous" styles of work. Second, it supports "multi-synchronous" work, in which parties work independently in parallel. Third, it directly supports observed patterns of opportunistic activities in collaborative working.