A Formal Characterization of Vagueness and Granularity for Context-Aware Mobile and Ubiquitous Computing

  • Hedda R. Schmidtke
  • Woontack Woo
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4239)


In this article, a formal approach for modeling central concepts of context-awareness in ubiquitous and mobile computing is introduced. The focus is on an appropriate handling of issues of vagueness and granularity in ubiquitous computing environments. A formalization of perceptual and sensory uncertainty and a characterization of granularity are applied for modeling three central aspects of context-awareness: context as retrieved from sensors, context for representing relevance, and context as unfocussed background information. The notions are developed and demonstrated with respect to the special case of spatial contexts, but are sufficiently general to also cover other types of context. Use of the characterized concepts is motivated with an example of ongoing work on ontology design for ubiquitous computing environments.


Context Location Mobile Computing Ubiquitous Computing Spatial Context Extended Location 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Hedda R. Schmidtke
    • 1
  • Woontack Woo
    • 1
  1. 1.GIST U-VR LabGwangjuRepublic of Korea

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