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» Efficient gossip-based aggregate computation
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ICDE
2006
IEEE
124views Database» more  ICDE 2006»
14 years 8 months ago
C-Cubing: Efficient Computation of Closed Cubes by Aggregation-Based Checking
It is well recognized that data cubing often produces huge outputs. Two popular efforts devoted to this problem are (1) iceberg cube, where only significant cells are kept, and (2...
Dong Xin, Zheng Shao, Jiawei Han, Hongyan Liu
CCGRID
2009
IEEE
13 years 4 months ago
Resource Information Aggregation in Hierarchical Grid Networks
We propose information aggregation as a method for summarizing the resource-related information, used by the task scheduler. Through this method the information of a set of resour...
Panagiotis C. Kokkinos, Emmanouel A. Varvarigos
IWPEC
2010
Springer
13 years 4 months ago
Partial Kernelization for Rank Aggregation: Theory and Experiments
RANK AGGREGATION is important in many areas ranging from web search over databases to bioinformatics. The underlying decision problem KEMENY SCORE is NP-complete even in case of fo...
Nadja Betzler, Robert Bredereck, Rolf Niedermeier
SIGMOD
2004
ACM
148views Database» more  SIGMOD 2004»
14 years 7 months ago
Vertical and Horizontal Percentage Aggregations
Existing SQL aggregate functions present important limitations to compute percentages. This article proposes two SQL aggregate functions to compute percentages addressing such lim...
Carlos Ordonez
ICDE
2001
IEEE
115views Database» more  ICDE 2001»
14 years 8 months ago
Incremental Computation and Maintenance of Temporal Aggregates
We consider the problems of computing aggregation queries in temporal databases, and of maintaining materialized temporal aggregate views efficiently. The latter problem is partic...
Jun Yang 0001, Jennifer Widom