8763 search results - page 359 / 1753 » Querying Database Knowledge |
272
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GIS
2006
ACM
16 years 7 months ago
2006
ACM
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...
190
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DOLAP
2004
ACM
16 years 6 days ago
2004
ACM
In today’s OLAP systems, integrating fast changing data, e.g., stock quotes, physically into a cube is complex and time-consuming. The widespread use of XML makes it very possib...
167
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DAWAK
2008
Springer
15 years 8 months ago
2008
Springer
Abstract. Data mining algorithms are often embedded in more complex systems, serving as the provider of data for internal decision making within these systems. In this paper we add...
207
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ICDE
2010
IEEE
16 years 6 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...
197
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
Incorporating probabilities into the semantics of incomplete databases has posed many challenges, forcing systems to sacrifice modeling power, scalability, or treatment of relatio...