不过名称空间对查询的语义的确有着巨大的影响。
But namespaces have a significant impact on the semantics of your queries.
本文提出了两个新的图上关键字搜索算法，使用了现代信息检索技术中的向量空间模型和随机游走模型来解决以上缺陷，使得查询结果更具语义信息。
In this paper, two novel algorithms are introduced, which employ the vector space model and random walk model to address the drawbacks above and make the results more semantical.
定义了空间查询子句的语法和语义，编程实现了相关空间算子的功能。
The syntax and semantics for spatial query clauses are defined, and the implementation of spatial operators and spatial query are also introduced.
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