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DEXA
2008
Springer
154views Database» more  DEXA 2008»
15 years 28 days ago
Approximate Range-Sum Queries over Data Cubes Using Cosine Transform
In this research, we propose to use the discrete cosine transform to approximate the cumulative distributions of data cube cells' values. The cosine transform is known to have...
Wen-Chi Hou, Cheng Luo, Zhewei Jiang, Feng Yan, Qi...
VLDB
2002
ACM
108views Database» more  VLDB 2002»
14 years 10 months ago
Adaptive Index Structures
Traditional indexes aim at optimizing the node accesses during query processing, which, however, does not necessarily minimize the total cost due to the possibly large number of r...
Yufei Tao, Dimitris Papadias
CORR
2010
Springer
95views Education» more  CORR 2010»
14 years 9 months ago
Towards an incremental maintenance of cyclic association rules
Recently, the cyclic association rules have been introduced in order to discover rules from items characterized by their regular variation over time. In real life situations, temp...
Eya Ben Ahmed, Mohamed Salah Gouider
XSYM
2010
Springer
172views Database» more  XSYM 2010»
14 years 9 months ago
EBSL: Supporting Deleted Node Label Reuse in XML
Recently, there has been much research into the specification of dynamic labeling schemes supporting XML updates. The primary design goal of any dynamic labeling scheme is to limi...
Martin F. O'Connor, Mark Roantree
ICDE
2012
IEEE
205views Database» more  ICDE 2012»
13 years 1 months ago
Optimizing Statistical Information Extraction Programs over Evolving Text
—Statistical information extraction (IE) programs are increasingly used to build real-world IE systems such as Alibaba, CiteSeer, Kylin, and YAGO. Current statistical IE approach...
Fei Chen, Xixuan Feng, Christopher Re, Min Wang