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SIGMOD
1998
ACM
121views Database» more  SIGMOD 1998»
15 years 10 months ago
New Sampling-Based Summary Statistics for Improving Approximate Query Answers
In large data recording and warehousing environments, it is often advantageous to provide fast, approximate answers to queries, whenever possible. Before DBMSs providing highly-ac...
Phillip B. Gibbons, Yossi Matias
IFIP
1998
Springer
15 years 10 months ago
Mobile agent technology in support of sales order processing in the virtual enterprise
The flexible integration of a range of disparate IT applications is a key requirement for today's global enterprises. The virtual enterprise, formed by a collection of collab...
Todd Papaioannou, John Edwards
PODS
1997
ACM
182views Database» more  PODS 1997»
15 years 10 months ago
A Cost Model For Nearest Neighbor Search in High-Dimensional Data Space
In this paper, we present a new cost model for nearest neighbor search in high-dimensional data space. We first analyze different nearest neighbor algorithms, present a generaliza...
Stefan Berchtold, Christian Böhm, Daniel A. K...
SIGMOD
1996
ACM
97views Database» more  SIGMOD 1996»
15 years 10 months ago
Bifocal Sampling for Skew-Resistant Join Size Estimation
This paper introduces bifocal sampling, a new technique for estimating the size of an equi-join of two relations. Bifocal sampling classi es tuples in each relation into two group...
Sumit Ganguly, Phillip B. Gibbons, Yossi Matias, A...
ICDE
1993
IEEE
158views Database» more  ICDE 1993»
15 years 10 months ago
Data fragmentation for parallel transitive closure strategies
A topic that is currently inspiring a lot of research is parallel (distributed) computation of transitive closure queries. In [lo] the disconnection set approach has been introduc...
Maurice A. W. Houtsma, Peter M. G. Apers, Gideon L...