Title :
Index structures for flexible querying in fuzzy spatial databases
Author :
Sözer, Aziz ; Yazici, Adnan
Author_Institution :
Dept. of Comput. Eng., METU, Ankara, Turkey
Abstract :
Database systems can be effective only if the data are properly handled at the physical level. Therefore, it is important to develop an effective spatial and aspatial indexing technique to facilitate flexible spatial and/or aspatial querying for spatial databases. In this study we adapt a number of spatial index structures, such as multilevel grid file (MLGF), G-tree, R-tree, and R*-tree, for fuzzy spatial databases and compare the performances of these structures for various flexible queries.
Keywords :
database indexing; fuzzy set theory; query processing; spatial data structures; tree data structures; visual databases; G-tree; R*-tree; R-tree; aspatial indexing technique; flexible spatial querying; fuzzy spatial databases; multilevel grid file; spatial index structures; spatial indexing technique; Data engineering; Database systems; Geographic Information Systems; Indexing; Lakes; Natural languages; Soil measurements; Spatial databases; Spatial indexes; Uncertainty;
Conference_Titel :
Fuzzy Systems, 2004. Proceedings. 2004 IEEE International Conference on
Print_ISBN :
0-7803-8353-2
DOI :
10.1109/FUZZY.2004.1375796
