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» A Perspective on Databases and Data Mining
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KDD
2004
ACM
123views Data Mining» more  KDD 2004»
16 years 7 months ago
A DEA approach for model combination
This paper proposes a novel Data Envelopment Analysis (DEA) based approach for model combination. We first prove that for the 2-class classification problems DEA models identify t...
Zhiqiang Zheng, Balaji Padmanabhan, Haoqiang Zheng
MLG
2007
Springer
16 years 22 days ago
Improving Frequent Subgraph Mining in the Presence of Symmetry
While recent algorithms for mining the frequent subgraphs of a database are efficient in the general case, these algorithms tend to do poorly on databases that have a few or no la...
Christian Desrosiers, Philippe Galinier, Pierre Ha...
CIB
2004
57views more  CIB 2004»
15 years 6 months ago
Identifying Global Exceptional Patterns in Multi-database Mining
In multi-database mining, there can be many local patterns (frequent itemsets or association rules) in each database. At the end of multi-database mining, it is necessary to analyz...
Chengqi Zhang, Meiling Liu, Wenlong Nie, Shichao Z...
SSDBM
1998
IEEE
115views Database» more  SSDBM 1998»
15 years 10 months ago
Tools for Data Warehouse Quality
In this demonstration, we show three interrelated tools intended to improve different aspects of the quality of data warehouse solutions. Firstly, the deductive object manager Con...
Michael Gebhardt, Matthias Jarke, Manfred A. Jeusf...
DEXAW
2007
IEEE
92views Database» more  DEXAW 2007»
16 years 28 days ago
Subtree Testing and Closed Tree Mining Through Natural Representations
Several classical schemes exist to represent trees as strings over a fixed alphabet; these are useful in many algorithmic and conceptual studies. Our previous work has proposed a...
José L. Balcázar, Albert Bifet, Anto...