2674 search results - page 201 / 535 » Data Models and Query Languages for Spatial Databases |
264
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GIS
2007
ACM
16 years 7 months ago
2007
ACM
We propose a general framework to index very large datasets of spatial data in a distributed system. Our proposal is built on the recently proposed Scalable Distributed Rtree (SD-...
170
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OTM
2005
Springer
15 years 11 months ago
2005
Springer
We propose to enhance a schema integration process with a validation phase employing logic-based data models. In our methodology, we validate the source schemas against the data mo...
206
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ICDT
2012
ACM
13 years 8 months ago
2012
ACM
In a recent paper by Hellerstein [15], a tight relationship was conjectured between the number of strata of a Datalog¬ program and the number of “coordination stages” require...
151
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TKDE
2002
15 years 6 months ago
2002
We introduce ImageMap, as a method for indexing and similarity searching in Image DataBases (IDBs). ImageMap answers "queries by example", involving any number of object...
186
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ICCV
2007
IEEE
16 years 20 days ago
2007
IEEE
Given a query image of an object, our objective is to retrieve all instances of that object in a large (1M+) image database. We adopt the bag-of-visual-words architecture which ha...