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SSD
2005
Springer
105views Database» more  SSD 2005»
15 years 12 months ago
Evaluation of Top-k OLAP Queries Using Aggregate R-Trees
Abstract. A top-k OLAP query groups measures with respect to some abstraction level of interesting dimensions and selects the k groups with the highest aggregate value. An example ...
Nikos Mamoulis, Spiridon Bakiras, Panos Kalnis
ICDM
2005
IEEE
138views Data Mining» more  ICDM 2005»
16 years 1 days ago
On Feature Selection through Clustering
We study an algorithm for feature selection that clusters attributes using a special metric and then makes use of the dendrogram of the resulting cluster hierarchy to choose the m...
Richard Butterworth, Gregory Piatetsky-Shapiro, Da...
MFCS
2005
Springer
15 years 12 months ago
On Beta-Shifts Having Arithmetical Languages
Let β be a real number with 1 < β < 2. We prove that the language of the β-shift is ∆0 n iff β is a ∆n-real. The special case where n is 1 is the independently inter...
Jakob Grue Simonsen
EOR
2007
76views more  EOR 2007»
15 years 6 months ago
Lower bounds and heuristics for the Windy Rural Postman Problem
In this paper we present several heuristic algorithms and a cutting-plane algorithm for the Windy Rural Postman Problem. This problem contains a big number of important Arc Routin...
Enrique Benavent, Alessandro Carrotta, Angel Corbe...
BMCBI
2008
114views more  BMCBI 2008»
15 years 6 months ago
Visualization of large influenza virus sequence datasets using adaptively aggregated trees with sampling-based subscale represen
Background: With the amount of influenza genome sequence data growing rapidly, researchers need machine assistance in selecting datasets and exploring the data. Enhanced visualiza...
Leonid Zaslavsky, Yiming Bao, Tatiana A. Tatusova