Fuzzy spatiotemporal data queries based on XQuery symbolic notation

被引：0
|
作者：
Bai, Lu-Yi [1 ]
Yan, Li [2 ]
Ma, Zong-Min [1 ]
机构：
[1] Bai, Lu-Yi
[2] Yan, Li
[3] Ma, Zong-Min
来源：
Bai, L.-Y. (blovdew@126.com) | 1600年 / Northeast University卷 / 34期
关键词：
Attribute queries - FLWOR syntax - Fuzzy spatiotemporal - Spatial queries - Spatiotemporal queries - Symbolic notation - Temporal queries - XQuery;
D O I：
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学科分类号：
摘要：
The conception of fuzzy spatiotemporal data queries was discussed. Fuzzy temporal queries, spatial queries, attribute queries, and spatiotemporal queries of fuzzy spatiotemporal data were studied. A symbolic notation for fuzzy spatiotemporal data queries was proposed on the basis of XQuery. The typical queries were shown by examples and explanations. In addition, the fuzzy spatiotemporal extensions of XQuery were discussed, including extensions of representation, extensions of management, and extensions of architecture. Queries in STQL and FTL could be represented using the proposed symbolic notation. What's more, semantic confusion caused by different forms of spatiotemporal query representation could be eliminated, and a uniform representation of various types of queries on fuzzy spatiotemporal data could be obtained.
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页码：505 / 508
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