Computer Science ›› 2018, Vol. 45 ›› Issue (4): 182-189.doi: 10.11896/j.issn.1002-137X.2018.04.031

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Spatial Keyword Range Query with User Preferences Constraint

GUO Shuai, LIU Liang and QIN Xiao-lin   

  • Online:2018-04-15 Published:2018-05-11

Abstract: With the wide application of location-based personalized service,spatial keyword range query with user pre-ferences constraint becomes a research hotspot.The existing indexes for spatial keyword range query do not take user preferences into account,resulting in poor pruning performance and low query efficiency.In order to solve these problems,a hybrid index called BRPQ(Boolean Range with Preferences Query index) was proposed to support user prefe-rences,spatial location and keywords collaborative pruning.This paper also proposed an efficient query processing algorithm for spatial keywords range query with user preferences constraint.Experimental results show that BRPQ outperforms the existing indexes in terms of building time and query processing efficiency.

Key words: Spatio-textual object,Spatial keyword range query,User preferences,Hybrid index

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