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INFORMATICALT
2008
15 years 21 days ago
2008
This paper studies an adaptive clustering problem. We focus on re-clustering an object set, previously clustered, when the feature set characterizing the objects increases. We prop...
195
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GIS
2008
ACM
16 years 1 months ago
2008
ACM
Given a spatial crime data warehouse, that is updated infrequently and a set of operations O as well as constraints of storage and update overheads, the index type selection probl...
192
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SIGMOD
2007
ACM
16 years 25 days ago
2007
ACM
An emerging challenge in modern distributed querying is to efficiently process multiple continuous aggregation queries simultaneously. Processing each query independently may be i...
89
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IDA
2007
Springer
15 years 6 months ago
2007
Springer
The paper presents new developments in an extension of Codd’s relational model of data. The extension consists in equipping domains of attribute values with a similarity relation...
114
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GISCIENCE
2004
Springer
15 years 6 months ago
2004
Springer
Abstract. Integration of GIS and hydrologic models has been a common approach for monitoring our ever-changing hydrologic system. One important issue in adapting such an approach i...