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SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
14 years 1 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
KDD
2005
ACM
165views Data Mining» more  KDD 2005»
14 years 9 months ago
Co-clustering by block value decomposition
Dyadic data matrices, such as co-occurrence matrix, rating matrix, and proximity matrix, arise frequently in various important applications. A fundamental problem in dyadic data a...
Bo Long, Zhongfei (Mark) Zhang, Philip S. Yu
SIGECOM
2011
ACM
219views ECommerce» more  SIGECOM 2011»
12 years 12 months ago
GSP auctions with correlated types
The Generalized Second Price (GSP) auction is the primary method by which sponsered search advertisements are sold. We study the performance of this auction in the Bayesian settin...
Brendan Lucier, Renato Paes Leme
DOLAP
2003
ACM
14 years 2 months ago
Hierarchical dwarfs for the rollup cube
The data cube operator exemplifies two of the most important aspects of OLAP queries: aggregation and dimension hierarchies. In earlier work we presented Dwarf, a highly compress...
Yannis Sismanis, Antonios Deligiannakis, Yannis Ko...
ATAL
2005
Springer
14 years 2 months ago
AgentSteel: an agent-based online system for the planning and observation of steel production
The steel production of the German company Saarstahl AG, a global respected steel manufacturer, represents a Supply Chain which comprehends several time-critical and highly interf...
Sven Jacobi, Cristián Madrigal-Mora, Esteba...