Indiscernibility and Vagueness in Spatial Information Systems
نویسنده
چکیده
We investigate the use of the concept of indiscernibility and vagueness in spatial information systems. To represent indiscernibility and vagueness we use rough sets, respectively fuzzy sets. We introduce a theoretical model to support approximate queries in information systems and we show how those queries can be used to perform uncertain classifications. We also explore how to assess quality of uncertain classifications and ways to compare those classifications to each other in order to assess accuracies. We implement the query language in an SQL relational language to demonstrate the feasibility of approximate queries and we perform an experiment on real data using uncertain classifications. ISBN 91-7283-602-4 • TRITA-NA-0321 • ISSN 0348-2952 • ISRN KTH/NA/R-03/21-SE
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تاریخ انتشار 2003