Publication - Harmonized and Reversible Development Framework for HLA Based Interoperable Application E-mail
Publications

Harmonized and Reversible Development Framework for HLA Based Interoperable Application

Authors : Tu Z., Zacharewicz G., Chen D., Zhang Z

Journal : The 7th International Mediterranean and Latin American Modelling Multiconference, Morocco (2010)

Web : http://hal.archives-ouvertes.fr/hal-00514556

This paper aims at improving the re-implementation of existing information systems when they are called to be involved in a system of systems, i.e. a federation of enterprise information systems that interoperate. The idea is reusing the local experiences coming from the development of the original information system with the process of Model Discovery and Ontological approach. We draw the strong points of MDA and HLA, former in transforming concepts and models from the conceptual level to the implementation and latter in implementation of distributed systems, then we propose a MDA/HLA framework to implement distributed enterprise models from the conceptual level of federated enterprise interoperability approach. In addition, we propose a model reversal methodology to help re-implement the legacy information system, in order to achieve the interoperability with other systems. We also draw the strong points from web services in order to improve the performance of HLA in distribute simulation.

 
Publication - Les dépendances fonctionnelles pour la sélection de vues dans les cubes de données E-mail
Publications

Les dépendances fonctionnelles pour la sélection de vues dans les cubes de données

Authors : Eve Garnaud, Sofian Maabout, Mohamed Mosbah

Journal : Journal of Decision Systems, Volume 21

Web : http://www.tandfonline.com/doi/abs/10.1080/12460125.2012.677645

OLAP query processing assumes two seemingly contradictory requirements: on one hand query processing should be fast (thus, queries pre-precomputation) and on another hand queries are assumed to be submitted in an ad hoc manner making workload usage for optimization sometimes not effective (we cannot materialize an infinite number of queries). Thus, in this paper we address the specific case of data cubes and a special class of queries corresponding somehow to report queries. We present techniques to select the queries to be materialized with the help of exact and approximate functional dependencies (FD’s). In contrast to most of the previous approaches, we take a user instead of a DBA point of view: rather than fixing the available storage space and minimizing queries cost, we fix the maximal queries cost and we minimize the required storage space. The conducted experiments show the effectiveness of our results.

 
Publication - Multi-strategies Ontology Alignment Aggregated by AHP E-mail
Publications

Multi-strategies Ontology Alignment Aggregated by AHP

Authors : Fuqi Song; Gregory Zacharewicz; David Chen

Conf : 16th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems(KES), San Sebastian : Spain (2012)

Web : http://hal.archives-ouvertes.fr/hal-00727155

Ontology alignment is a critical issue for semantic integration and data interoperability. Many basic matching techniques have been proposed, the crucial point is how to combine different techniques to adapt the diverse sources of ontology. In this paper, we proposed to use three matchers with multiple strategies from perspective of label, semantic and structural aspects of ontology. A rule-based pre-process for identifying the core word with part-of-speech (POS) tagging is carried out before matching. Method Analytic Hierarchy Process (AHP) is applied to aggregate different matching results dynamically and automatically. The intensity of importance is determined by three similarity indicators, which reflect the essential features of source ontologies. This proposed approach shows strong matching ability, which obtained high precision and outstanding evaluation results in benchmarking experiment.

 
Publication - An Ontology-Driven Framework towards Building Enterprise Semantic Information Layer E-mail
Publications

An Ontology-Driven Framework towards Building Enterprise Semantic Information Layer

Authors : Fuqi Song; Gregory Zacharewicz; David Chen

Journal : Advanced Engineering Informatics, 2013, 27 (1), pp. 38-50

Web : http://hal.archives-ouvertes.fr/hal-00727155

 
Document - Flyers SIMID E-mail
Flyers

This is the introducing flyer of SIMID projet.