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159
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VLDB
1999
ACM
15 years 12 months ago
1999
ACM
This paper aims to improve the accuracy of query result-size estimations in query optimizers by leveraging the dynamic feedback obtained from observations on the executed query wo...
207
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SIGMOD
1998
ACM
15 years 12 months ago
1998
ACM
In this paper, we propose the Pyramid-Technique, a new indexing method for high-dimensional data spaces. The PyramidTechnique is highly adapted to range query processing using the...
203
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SIGMOD
1998
ACM
15 years 12 months ago
1998
ACM
The Relational On-Line Analytical Processing (ROLAP) is emerging as thedominant approach in data warehousing with decision support applications. In order to enhance query performa...
229
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SSPR
1998
Springer
15 years 12 months ago
1998
Springer
Abstract. The increase in accessability to on-line visual data has promoted the interest in browsing and retrieval of images from Image Databases. Current approaches assume either ...
185
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VLDB
1998
ACM
15 years 12 months ago
1998
ACM
The problem of finding an optimal bipartition of a rectangle set has a direct impact on query performance of dynamic R-trees. During update operations, overflowed nodes need to be...