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SIGMOD
2002
ACM
142views Database» more  SIGMOD 2002»
14 years 9 months ago
The Grid: An Application of the Semantic Web
The Grid is an emerging platform to support on-demand "virtual organisations" for coordinated resource sharing and problem solving on a global scale. The application thr...
Carole A. Goble, David De Roure
PODS
2005
ACM
151views Database» more  PODS 2005»
14 years 9 months ago
Estimating arbitrary subset sums with few probes
Suppose we have a large table T of items i, each with a weight wi, e.g., people and their salary. In a general preprocessing step for estimating arbitrary subset sums, we assign e...
Noga Alon, Nick G. Duffield, Carsten Lund, Mikkel ...
PODS
2005
ACM
211views Database» more  PODS 2005»
14 years 9 months ago
Join-distinct aggregate estimation over update streams
There is growing interest in algorithms for processing and querying continuous data streams (i.e., data that is seen only once in a fixed order) with limited memory resources. Pro...
Sumit Ganguly, Minos N. Garofalakis, Amit Kumar, R...
PODS
2005
ACM
164views Database» more  PODS 2005»
14 years 9 months ago
Lower bounds for sorting with few random accesses to external memory
We consider a scenario where we want to query a large dataset that is stored in external memory and does not fit into main memory. The most constrained resources in such a situati...
Martin Grohe, Nicole Schweikardt
PODS
2006
ACM
134views Database» more  PODS 2006»
14 years 9 months ago
Finding global icebergs over distributed data sets
Finding icebergs ? items whose frequency of occurrence is above a certain threshold ? is an important problem with a wide range of applications. Most of the existing work focuses ...
Qi Zhao, Mitsunori Ogihara, Haixun Wang, Jun Xu