计算机科学 ›› 2018, Vol. 45 ›› Issue (4): 182-189.doi: 10.11896/j.issn.1002-137X.2018.04.031
郭帅,刘亮,秦小麟
GUO Shuai, LIU Liang and QIN Xiao-lin
摘要： 随着基于地理位置的个性化服务的广泛应用,用户偏好约束的空间关键词范围查询成为了研究热点。现有面向空间关键词范围查询的索引没有考虑用户偏好属性,导致剪枝性能和查询效率较低。为了解决该问题,提出了一种支持用户偏好属性、空间位置、关键词协同剪枝的混合索引BRPQ；并在此基础上,提出了高效的用户偏好约束的空间关键词范围查询处理算法。实验结果表明,相比现有索引,BRPQ索引的构建时间平均减少了13%,查询效率平均提升了20%。
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