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» Parallel Database Techniques in Decision Support and Data Mi...
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SAC
2008
ACM
13 years 8 months ago
Aggregation languages for moving object and places of interest
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...
Leticia I. Gómez, Bart Kuijpers, Alejandro ...
CORR
2012
Springer
202views Education» more  CORR 2012»
12 years 4 months ago
Mining Flipping Correlations from Large Datasets with Taxonomies
In this paper we introduce a new type of pattern – a flipping correlation pattern. The flipping patterns are obtained from contrasting the correlations between items at diffe...
Marina Barsky, Sangkyum Kim, Tim Weninger, Jiawei ...
DOLAP
2006
ACM
14 years 2 months ago
Research in data warehouse modeling and design: dead or alive?
Multidimensional modeling requires specialized design techniques. Though a lot has been written about how a data warehouse should be designed, there is no consensus on a design me...
Stefano Rizzi, Alberto Abelló, Jens Lechten...
ADBIS
1999
Springer
104views Database» more  ADBIS 1999»
14 years 28 days ago
Arbiter Meta-Learning with Dynamic Selection of Classifiers and Its Experimental Investigation
In data mining, the selection of an appropriate classifier to estimate the value of an unknown attribute for a new instance has an essential impact to the quality of the classifica...
Alexey Tsymbal, Seppo Puuronen, Vagan Y. Terziyan
SIGMOD
1996
ACM
120views Database» more  SIGMOD 1996»
14 years 23 days ago
Implementing Data Cubes Efficiently
Decision support applications involve complex queries on very large databases. Since response times should be small, query optimization is critical. Users typically view the data ...
Venky Harinarayan, Anand Rajaraman, Jeffrey D. Ull...