Practical Extensions for Task Models

  • Daniel Sinnig
  • Maik Wurdel
  • Peter Forbrig
  • Patrice Chalin
  • Ferhat Khendek
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4849)


The current set of temporal operators is insufficient to make effective use of task models as specifications for user interfaces. Moreover, the predominant monolithic task tree structure does not scale well for sizable applications. In order to overcome these shortcomings, a small collection of practical extensions for task models is proposed. In particular, we define new temporal operators (stop, non-deterministic choice, deterministic choice and instance iteration), concepts in support of modularization and a high-level task diagram notation. Finally, we introduce a new concept for expressing cooperative task models that distinguishes between different roles as well as between actors fulfilling these roles.


Task specifications cooperative task models modularization specialization 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Daniel Sinnig
    • 1
  • Maik Wurdel
    • 2
  • Peter Forbrig
    • 2
  • Patrice Chalin
    • 1
  • Ferhat Khendek
    • 1
  1. 1.Faculty of Engineering and Computer Science, Concordia University, Montreal, QuebecCanada
  2. 2.Department of Computer Science, University of RostockGermany

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