Sciweavers

1038 search results - page 127 / 208
» Space-Bounded Query Approximation
Sort
View
SSDBM
2008
IEEE
131views Database» more  SSDBM 2008»
15 years 10 months ago
Linked Bernoulli Synopses: Sampling along Foreign Keys
Random sampling is a popular technique for providing fast approximate query answers, especially in data warehouse environments. Compared to other types of synopses, random sampling...
Rainer Gemulla, Philipp Rösch, Wolfgang Lehne...
ICDE
2006
IEEE
176views Database» more  ICDE 2006»
16 years 5 months ago
Mondrian Multidimensional K-Anonymity
K-Anonymity has been proposed as a mechanism for protecting privacy in microdata publishing, and numerous recoding "models" have been considered for achieving kanonymity...
Kristen LeFevre, David J. DeWitt, Raghu Ramakrishn...
PODS
2006
ACM
217views Database» more  PODS 2006»
16 years 4 months ago
A simpler and more efficient deterministic scheme for finding frequent items over sliding windows
In this paper, we give a simple scheme for identifying approximate frequent items over a sliding window of size n. Our scheme is deterministic and does not make any assumption on ...
Lap-Kei Lee, H. F. Ting
SIGIR
2009
ACM
15 years 11 months ago
Brute force and indexed approaches to pairwise document similarity comparisons with MapReduce
This paper explores the problem of computing pairwise similarity on document collections, focusing on the application of “more like this” queries in the life sciences domain. ...
Jimmy J. Lin
WAW
2007
Springer
77views Algorithms» more  WAW 2007»
15 years 10 months ago
Using Bloom Filters to Speed Up HITS-Like Ranking Algorithms
Abstract. This paper describes a technique for reducing the querytime cost of HITS-like ranking algorithm. The basic idea is to compute for each node in the web graph a summary of ...
Sreenivas Gollapudi, Marc Najork, Rina Panigrahy