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《Journal of Southwest Jiaotong University》 2003-03
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Spatial Object Boundary Index Based on Wide Grids

LUO Dean1,LIAO Liqiong2(1. School of Electronic Eng., University of Electronic Science and Technology, Chengdu 610054, China; 2. School of City Construction, Southwest University of Science and Technology, Mianyang 621002, China )  
Through the analyses of the grid index and the spatial object index, a structure of the spatial object boundary index based on wide grids is put forward. The principle, data storage form and construction of the index structure and its use in spatial query are discussed. In addition, its validity and feasibility are proved. The proposed index can reduce the data to be stored and time spent on spatial query, raise the efficiency and precision of spatial query markedly.
【Fund】: 国家自然科学基金(No.40271091)
【CateGory Index】: TP311.1
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