Spatial data methods and vague regions: A rough set approach

Authors:
Theresa Beaubouef;Frederick E. Petry;Roy Ladner
Affiliations:
Computer Science Department, Southeastern Louisiana University, Hammond, LA 70402, USA;Naval Research Laboratory, Stennis Space Center, Stennis Space Center, MS 39529, USA;Naval Research Laboratory, Stennis Space Center, Stennis Space Center, MS 39529, USA
Venue:
Applied Soft Computing
Year:
2007

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Abstract

Uncertainty management has been considered essential for real world applications, and spatial data and geographic information systems in particular require some means for managing uncertainty and vagueness. Rough sets have been shown to be an effective tool for data mining and uncertainty management in databases. The 9-intersection, region connection calculus (RCC) and egg-yolk methods have proven useful for modeling topological relations in spatial data. In this paper, we apply rough set definitions for topological relationships based on the 9-intersection, RCC and egg-yolk models for objects with broad boundaries. We show that rough sets can be used to express and improve on topological relationships and concepts defined with these models.