Modifications of fuzzy directional queries for spatial databases

Author

Cobb, Maria ; Petry, Frederick E. ; Wen, Lixong

Author_Institution

Dept. Comput. Sci., Univ. of Southern Mississippi, Hattiesburg, MS, USA

Volume

4

fYear

2001

fDate

25-28 July 2001

Firstpage

2394

Abstract

A previously developed approach (M. Cobb and F. Petty, 1998) for determining directional and spatial relationships has been based on the partitioning of the Minimum Bounding Rectangle (MBR) that represents the underlying actual spatial object. This development took an approach which allowed a very computationally efficient determination of directions. However the simplifications caused some anomalous cases to possibly occur. The paper provides some modifications of the reference area and axis weight used to compute directions. This permits a better representation of the intuition of certain directional cases without being computationally inefficient

Keywords

fuzzy set theory; geographic information systems; query processing; topology; visual databases; MBR; Minimum Bounding Rectangle partitioning; anomalous cases; axis weight; computational efficiency; directional cases; fuzzy directional queries; reference area; spatial databases; spatial object; spatial relationships; Computer science; Data structures; Database languages; Logic; Query processing; Spatial databases; USA Councils;

fLanguage

English

Publisher

ieee

Conference_Titel

IFSA World Congress and 20th NAFIPS International Conference, 2001. Joint 9th

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-7078-3

Type

conf

DOI

10.1109/NAFIPS.2001.944447

Filename

944447