[1]LI Pan,ZHANG Xiaoyan,MENG Xiangfu,et al.Spatial keyword personalized and semantic approximate query approach[J].CAAI Transactions on Intelligent Systems,2020,15(6):1163-1174.[doi:10.11992/tis.201903033]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
15
Number of periods:
2020 6
Page number:
1163-1174
Column:
学术论文—自然语言处理与理解
Public date:
2020-11-05
- Title:
-
Spatial keyword personalized and semantic approximate query approach
- Author(s):
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LI Pan; ZHANG Xiaoyan; MENG Xiangfu; ZHAO Lulu; QI Xueyue
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School of Electronic and Information Engineering, Liaoning Technical University, Huludao 125105, China
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- Keywords:
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spatial keyword query; word embedding; semantic approximate query; text; numerical attribute; index structure; query matching
- CLC:
-
TP311
- DOI:
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10.11992/tis.201903033
- Abstract:
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Most spatial keyword query processing models only support the location proximity and text similarity matching. However, in terms of text information processing, spatial objects with similar semantics but mismatched forms cannot be filtered out and provided to query users. Furthermore, the current spatial-text index structure cannot process the numerical attributes. To solve the above problem, this paper proposes a spatial keyword query method that can support the semantic approximate query processing. Word embedding technology is used to expand the users’ original queries and generate a series of query keywords semantically related to the original query keywords. Then, a hybrid index structure AIR-tree that can support text and semantic matching and use the Skyline method to process numerical attributes is proposed. Finally, AIR-tree is used for query matching to return the top-k ordered spatial objects most closely related to the query conditions. Experimental analysis and results show that compared with similar methods, this method has a higher execution efficiency and better user satisfaction. The query efficiency based on the AIR-tree index is 3.6% higher than that of the IRS-tree index. In terms of accuracy, IR-tree and IRS-tree are increased by 10.14% and 16.15%, respectively, compared with AIR-tree.