Salem Chakhar

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We present in this paper, a data fusion [Third International Conference in Information Fusion, Paris, 2000] algorithm from evidential databases [IEEE SMC’02, 2002]. This algorithm has the specificity of using a hybrid operator avoiding the overwhelming trace problem. Besides, it uses a specific scale for computing reliabilities of information’s sources. We(More)
Clustering is an active research topic in data mining and different methods have been proposed in the literature. Most of these methods are based on the use of a distance measure defined either on numerical attributes or on categorical attributes. However, in fields such as road traffic and medicine, datasets are composed of numerical and categorical(More)
  • Salem Chakhar
  • 2012 Eighth International Conference on Signal…
  • 2012
The paper proposes a layered system for web service composition. The input for the system is the specification of the desired service, including both functional and non-functional requirements. The composition operation takes as input a generic composition graph defined based on the functional requirements. Then, the set of potential compositions is(More)
DEFINITION Multicriteria analysis is generally defined as “a decision-aid and a mathematical tool allowing the comparison of different alternatives or scenarios according to many criteria, often conflicting, in order to guide the decision maker towards a judicious choice” [12]. The set of decision alternatives considered in a given problem is often denoted(More)
Fuzzy semantic model (FSM) is a data model that uses basic concepts of semantic modeling and supports handling fuzziness, uncertainty and imprecision of real-world at the attribute, entity and class levels. The paper presents the principles and constructs of the FSM. It proposes ways to define the membership functions within all the constructs of the FSM.(More)
DEFINITION A spatial decision support system (SDSS) is an interactive, computer-based system designed to support a user or a group of users in achieving a higher effectiveness of decision making while solving a semi-structured spatial decision problem [10]. It lies at the intersection of two major trends in the spatial sciences: geographic information(More)