Inquiry and Introspection for Non-deterministic Queries in Mobile Networks

Authors:
Vasanth Rajamani;Christine Julien;Jamie Payton;Gruia-Catalin Roman
Affiliations:
Department of Electrical and Computer Engineering, The University of Texas at Austin,;Department of Electrical and Computer Engineering, The University of Texas at Austin,;Department of Computer Science, University of North Carolina, Charlotte;Department of Computer Science and Engineering, Washington University in Saint Louis,
Venue:
FASE '09 Proceedings of the 12th International Conference on Fundamental Approaches to Software Engineering: Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2009
Year:
2009

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Abstract

This paper focuses on the information gathering support needs for enterprises that operate over wireless mobile ad hoc networks. While queries are a convenient way to obtain information, the highly dynamic nature of such networks makes it difficult to ensure a precise match between the results returned by a query and the actual state of the enterprise. However, decisions can be made based on the perceived quality of the information retrieved; specialized query support is needed to control and assess the accuracy of the query results. In this paper, we introduce the notion of inquiry mode to allow the user to exercise control over the query processing policy so as to match the level of accuracy to the requirements of the task. In addition, we describe the use of query introspection, a process for assessing the fitness of a particular inquiry mode. Both concepts are formalized, illustrated, and evaluated.