On the Evaluation of Quality of Context
EuroSSC '08 Proceedings of the 3rd European Conference on Smart Sensing and Context
QACBAC: an owner-centric QoC-aware context-based access control model for pervasive environments
SPRINGL '08 Proceedings of the SIGSPATIAL ACM GIS 2008 International Workshop on Security and Privacy in GIS and LBS
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Quality of Context (QoC) is critical in context reasoning, context refining, security policy configuring, etc. Many researches have been presented to model context and its quality by quantifying QoC-parameters. However, these quality models emphasis on the information-inherent QoC, while the influence of context-aware applications and environment situation on QoC is not well considered. In this paper, we will propose a novel context quality model based on OWL-DL, which is related with situation and can be specified by context-aware applications. Moreover, a context processing infrastructure is introduced, since QoC model is relevant to context processing. Furthermore, a context information service prototype is implemented to support application and situation related QoC rectification. Finally, we demonstrate the efficacy of this approach through a storeroom scenario and a case study of context file system application with the help of a Pioneer III-AT mobile robot and a FUSE-based Context file system.