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DAWAK
1999
Springer
15 years 11 months ago
Heuristic Algorithms for Designing a Data Warehouse with SPJ Views
A Data Warehouse DW can be abstractly seen as a set of materialized views de ned over relations that are stored in distributed heterogeneous databases. The selection of views for...
Spyros Ligoudistianos, Timos K. Sellis, Dimitri Th...
KES
1998
Springer
15 years 11 months ago
On the effect of multi-parents recombination in binary coded genetic algorithms
Abstract--Recombination operator plays a very important role in genetic algorithms. In this paper, we present binary coded genetic algorithms in which more than two parents are inv...
Shigeyoshi Tsutsui, Lakhmi C. Jain
VLDB
1998
ACM
123views Database» more  VLDB 1998»
15 years 11 months ago
Diag-Join: An Opportunistic Join Algorithm for 1:N Relationships
Time of creation is one of the predominant (often implicit) clustering strategies found not only in Data Warehouse systems: line items are created together with their correspondin...
Sven Helmer, Till Westmann, Guido Moerkotte
ECML
2006
Springer
15 years 10 months ago
EM Algorithm for Symmetric Causal Independence Models
Causal independence modelling is a well-known method both for reducing the size of probability tables and for explaining the underlying mechanisms in Bayesian networks. In this pap...
Rasa Jurgelenaite, Tom Heskes
GECCO
2006
Springer
176views Optimization» more  GECCO 2006»
15 years 10 months ago
A genetic algorithm with backtracking for protein structure prediction
In this paper, we propose a simple genetic algorithm for finding the optimal conformation of a protein using the three-dimensional square HP model. A backtracking procedure is use...
Clayton Matthew Johnson, Anitha Katikireddy