The paper addresses the problem of explaining Boolean Conjunctive Query (BCQ) entailment in the presence of inconsistency within the Ontology-Based Data Access (OBDA) setting, where inconsistency is handled by the intersection of closed repairs semantics (ICR) and the ontology is represented by Datalog+/-rules. We address this problem in the case of both BCQ acceptance and failure by adopting a logical instantiation of abstract argumentation model; that is, in order to explain why the query is accepted or failed, we look for proponent or opponent sets of arguments in favor or against the query acceptance. We have also studied the computational complexity of the problem of finding an arbitrary explanation as well as all explanations.

Previously studied fuzzy bipolar conditions of type "and if possible" are made of a mandatory condition c and an optional condition w. They allow expressing complex preferences of a conjunctive nature. We define in this paper, a new kind of fuzzy bipolar conditions of the form "or else" which express complex preferences of a disjunctive nature. We show that the "or else" form can be used as a negation operator of the "and if possible" form and vice versa. We also show that these both forms are compatible and, therefore, fuzzy bipolar conditions of both types can be used together in the same bipolar query.

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argumentation system for eco-efficient packaging material selection. Computers and Electronics in Agriculture, Elsevier, 2015Elsevier, , 113, pp.174-192. 10.1016Elsevier, /j.compag.2015

A fuzzy bipolar relation is a relation defined by a fuzzy bipolar condition, which could be interpreted as an association of a constraint and a wish. In this context, the extension of the relational division operation to bipolarity is studied in this paper. Firstly, we define a bipolar division when the involved relations are crisp. Then, we define, from the semantic point of view, several forms of bipolar division when the involved relations are defined by fuzzy bipolar conditions. These forms of division can be related to the general model of fuzzy bipolar division introduced in [4,5].

Improving the performance of Mobile Ad hoc NET-works (MANETs) is challenging. The MANETs communications are presented with many constraints such as dynamic topology, unreliability of wireless links, and limited bandwidth and energy resources. The routing in MANETs can be particularly difficult due to aggravated congestion problem. This paper proposes a new QoS (Quality of Service) routing protocol combined with the flow control mechanism. This routing protocol selects the routes having more resources in an intelligent manner and does not rely on diffusion. The proposed routing protocol uses a new metric to find the route with higher transmission rate, less latency and better stability. In order to reinforce the congestion avoidance, a flow control mechanism is employed to adapt the transmission rate for each route. The proposed routing solution is modeled by ant systems. The numerical results are obtained using the Network Simulator (NS2.31). These results confirm that the joint consideration of flow control and routing can significantly improve the network performance compared to other QoS routing protocols such as the QoS-AODV (Ad hoc On Demand Vector with QoS) protocol.

To cite this version:Valérie Guillard, Patrice Buche, Sébastien Destercke, Nouredine Tamani, Madalina Croitoru, et al.. A Decision Support System to design modified atmosphere packaging for fresh produce based on a bipolar flexible querying approach. Computers and Electronics in Agriculture, Elsevier, 2015, 111, pp.131-139. 10.1016/j.compag.2014 the following multi-criteria query for his/her product asking for a pack-32 aging with optimal gas permeabilities that guarantee product quality 33 and optionally a transparent packaging material made from renew-34 able resources with a cost for raw material less than 3 e/ kg. To handles imprecise, uncertain and missing data stored in the database. 43We detail its operational functioning through a real life case study to 44 determine the most satisfactory materials for apricots packaging. 45