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VLDB
2001
ACM
86views Database» more  VLDB 2001»
15 years 1 months ago
Intelligent Rollups in Multidimensional OLAP Data
In this paper we propose a new operator for advanced exploration of large multidimensional databases. The proposed operator can automatically generalize from a specific problem c...
Gayatri Sathe, Sunita Sarawagi
DOLAP
2005
ACM
14 years 11 months ago
A relevance-extended multi-dimensional model for a data warehouse contextualized with documents
Current data warehouse and OLAP technologies can be applied to analyze the structured data that companies store in their databases. The circumstances that describe the context ass...
Juan Manuel Pérez, Rafael Berlanga Llavori,...
ICASSP
2011
IEEE
14 years 1 months ago
SVM feature selection for multidimensional EEG data
In many machine learning applications, like Brain - Computer Interfaces (BCI), only high-dimensional noisy data are available rendering the discrimination task non-trivial. In thi...
Nisrine Jrad, Ronald Phlypo, Marco Congedo
ICDE
1997
IEEE
114views Database» more  ICDE 1997»
15 years 10 months ago
Modeling Multidimensional Databases
We propose a data model and a few algebraic operations that provide semantic foundation to multidimensional databases. The distinguishing feature of the proposed model is the symm...
Rakesh Agrawal, Ashish Gupta, Sunita Sarawagi
GIS
2004
ACM
15 years 10 months ago
Representing spatiality in a conceptual multidimensional model
Data Warehouses and On-Line Analytical Processing systems rely on a multidimensional model that includes dimensions, hierarchies, and measures. Such model allows to express users&...
Elzbieta Malinowski, Esteban Zimányi