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Many hybrid index structures have been proposed to answer Spatial-Keyword (SK) queries in geographic information system (GIS). To the best of our knowledge, however, few works focus on querying approximate keyword in GIS efficiently. In this paper we propose gR*-tree for Approximate SK queries- ASK queries, whose objective is to find the spatial objects with their textual attributes similar to the...
Spatial-Keyword (SK) queries, which are queries on spatial objects associated with textual attributes, have received significant attention in geographic information system (GIS) recently. Many hybrid index structures have been proposed to answer SK queries. To the best of our knowledge, however, few of them are adequate to handle approximate keyword matching in space database efficiently. This means...
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