2674 search results - page 187 / 535 » Data Models and Query Languages for Spatial Databases |
267
Voted
ICDE
2001
IEEE
16 years 7 months ago
2001
IEEE
Spatial Joins are important and time consuming operations in spatial database management systems. It is crucial to be able to accurately estimate the performance of these operatio...
177
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WISE
2003
Springer
15 years 11 months ago
2003
Springer
In this paper, we further develop a proposed layered approach for the Semantic Web. Our objective is to build a specific solution to the problem of providing data interoperability...
148
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ADBIS
2005
Springer
15 years 11 months ago
2005
Springer
We present a query language called MDatalog, which is an extension of Datalog for multimodal deductive databases. We define modal relational algebras and give the seminaive evalua...
164
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GEOINFORMATICA
1998
15 years 6 months ago
1998
The issue of ®nding similar 3-D surface segments arises in many recent applications of spatial database systems, such as molecular biology, medical imaging, CAD, and geographic i...
208
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MM
1994
ACM
15 years 10 months ago
1994
ACM
In this paper we propose a technique for segmenting images by texture content with application to indexing images in a large image database. Using a quad-tree decomposition, textu...