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GI
1998
Springer
13 years 8 months ago
An Efficient Strategy for Tiling Multidimensional OLAP Data Cubes
Computing aggregates over selected categories of multidimensional discrete data (MDD) cubes is the core operation of many on-line analytical processing (OLAP) systems. In order to...
Paolo Marques, Paula Furtado, Peter Baumann
GI
2001
Springer
13 years 9 months ago
DOL: An Interoperable Document Server
We describe the design and experiences gained with the database- and web-based document server DOL, which we developed at the University of Leipzig (http://dol.uni-leipzig.de). Th...
Sergey Melnik, Erhard Rahm, Dieter Sosna
MFCS
1998
Springer
13 years 8 months ago
Blockwise Variable Orderings for Shared BDDs
In this paper we consider the problem of characterizing optimal variable orderings for shared OBDDs of two Boolean functions fi = gi i hi, i = 1, 2, where i is an operator from th...
Harry Preuß, Anand Srivastav
GI
1998
Springer
13 years 8 months ago
Self-Organizing Data Mining
"KnowledgeMiner" was designed to support the knowledge extraction process on a highly automated level. Implemented are 3 different GMDH-type self-organizing modeling algo...
Frank Lemke, Johann-Adolf Müller
GI
2007
Springer
13 years 10 months ago
Semantic Web Technologies for Power Grid Management
: Utility companies worldwide are facing a multitude of new challenges, which can not be met with the historically grown, monolithic IT systems currently in use. Service oriented a...
Mathias Uslar, Nikolai Dahlem