2514 search results - page 364 / 503 » On the Computation of Approximations of Database Queries |
171
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EDBT
2006
ACM
16 years 7 months ago
2006
ACM
Given a set of N multi-dimensional points, we study the computation of -quantiles according to a ranking function F, which is provided by the user at runtime. Specifically, F compu...
156
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SAC
2006
ACM
16 years 25 days ago
2006
ACM
In the paper we describe the problem of grouping and aggregation in the concept-oriented data model. The model is based on ordering its elements within a hierarchical multidimensi...
165
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SAC
2006
ACM
16 years 25 days ago
2006
ACM
Modern database applications like geographic information systems, multimedia databases, and digital libraries dealing with huge volumes of high dimensional data, make use of multi...
174
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FOCS
2003
IEEE
16 years 4 days ago
2003
IEEE
We give a complexity theoretic classification of homomorphism problems for graphs and, more generally, relational structures obtained by restricting the left hand side structure ...
219
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SSDBM
1994
IEEE
15 years 11 months ago
1994
IEEE
The analysis of time series is a central issue in economic research and many other scientific applications. However, the data management functionality for this field is not provid...