Geographical Queries
نویسندگان
چکیده
منابع مشابه
The Results of Geographical Information System Queries
In this paper,we study the definition of the results for GIS queries. They are based on a graphical representation. Such a representation may introduce some ambiguities depending on the class of queries. We study two different ambiguities due to the aggregate functions and the notion of homogeneity.
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Natural language interface to spatial databases have not received a lot of attention in computational linguistics, in spite of the potential value of such systems for users of Geographical Information Systems (GISs). This paper presents a controlled language for GIS queries, solves some of the semantic problems for spatial inference in this language, and introduces a system that implements this...
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It’s a well-known fact that new GIS applications need to keep track of temporal information. However, the most widely used spatial index, the R-Tree and its variants, do not preserve the evolution of bounding boxes. Some new indexing structures were proposed in the literature that allows the retrieving of present and past states of data. In this paper we evaluate the most popular indexes struct...
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ژورنال
عنوان ژورنال: Journal of Geography
سال: 1904
ISSN: 0022-1341,1752-6868
DOI: 10.1080/00221340408985488