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ERSHOV
2006
Springer
14 years 27 days ago
Chase of Recursive Queries
In this work, we present a semantic query optimization technique to improve the efficiency of the evaluation of a subset of SQL:1999 recursive queries. Using datalog notation, we c...
Nieves R. Brisaboa, Antonio Fariña, Miguel ...
NSDI
2008
13 years 11 months ago
Catching Instant Messaging Worms with Change-Point Detection Techniques
Instant messaging (IM) systems have gained a lot of popularity in recent years. The increasing number of IM users has lured malware authors to develop more worms and viruses that ...
Guanhua Yan, Zhen Xiao, Stephan Eidenbenz
TKDE
2008
175views more  TKDE 2008»
13 years 9 months ago
Efficient Phrase-Based Document Similarity for Clustering
Phrase has been considered as a more informative feature term for improving the effectiveness of document clustering. In this paper, we propose a phrase-based document similarity t...
Hung Chim, Xiaotie Deng
ICDE
2007
IEEE
140views Database» more  ICDE 2007»
14 years 10 months ago
Selecting Stars: The k Most Representative Skyline Operator
Skyline computation has many applications including multi-criteria decision making. In this paper, we study the problem of selecting k skyline points so that the number of points,...
Xuemin Lin, Yidong Yuan, Qing Zhang, Ying Zhang
ICPR
2008
IEEE
14 years 10 months ago
Detecting trends in social bookmarking systems using a probabilistic generative model and smoothing
We propose a method for the detection of trends in social bookmarking systems. Compared to other work in this emerging field, our approach has a more sound statistical basis. In o...
Alexander Korth, Christian Bauckhage, Florian Metz...