M Martin Nevot - Knowledge and Information Systems, 2025 - Springer
Combining multi-criteria decision analysis and trend reversal discovery make it possible to extract globally optimal, or non-dominated, data in relation to several criteria, and then to …
We present a new full cube computation technique and a cube storage representation approach, called the multidimensional cyclic graph (MCG) approach. The data cube …
S Nedjar, R Cicchetti, L Lakhal - Information Sciences, 2011 - Elsevier
Data cubes capture general trends aggregated from multidimensional data from a categorical relation. When provided with two relations, interesting knowledge can be …
N Hanusse, S Maabout - Proceedings of the 20th ACM international …, 2011 - dl.acm.org
The border concept has been introduced by Mannila and Toivonen in their seminal paper [20]. This concept finds many applications, eg maximal frequent itemsets, minimal functional …
S Nedjar, F Pesci, L Lakhal, R Cicchetti - … 2011, Nicosia, Cyprus, May 2-6 …, 2011 - Springer
In this paper we propose the characterization of two new structures, the Agree Concept Lattice and the Quotient Agree Lattice of a database relation. Both of them are of great …
Découvrir des renversements de tendances entre deux cubes de données offre aux utilisateurs une connaissance nouvelle et intéressante lors des fluctuations de l'univers réel …
L Lakhal, S Nedjar, R Cicchetti - Intelligent Data Analysis, 2017 - content.iospress.com
The Skyline concept has been introduced in order to exhibit the best objects according to all the criterion combinations and makes it possible to analyze the relationships between …
La matérialisation de vues est une technique efficace d'optimisation de requêtes. Dans cette thèse, nous proposons une nouvelle vision" orientée utilisateur" de solutions pour le …
S Nedjar, A Casali, R Cicchetti, L Lakhal - International Conference on …, 2010 - Springer
This paper focuses on borders and lossless representations for Constrained Datacubes of database relations, which can represent many-valued contexts. The final goal is to optimize …