Spécification et implémentation du système d'aide à la décision multicritère pour la maintenance préventive et la gestion du patrimoine de la société d'autoroute ESCOTA : le projet SINERGIE

摘要

Due to the ageing of the infrastructure, the toll motorway company ESCOTA aims at the formalization and improvement of the decisional process for preventive maintenance and assets management in a multi actors and multi criteria (MC) environment. The information processing used by ESCOTA can be formalized in three steps: measure, evaluation and decision. Periodic inspections are performed to detect any malfunction symptoms. The expert in charge of a domain (carriageways, bridges ...) evaluates the situation seriousness and associates an emergency degree to the corresponding maintenance operation. The official in charge of the operating network attribute a priority degree according to strategic criteria. To each step of this process a specific set of criteria and an aggregation operator (Weighted Average Mean WAM) correspond. Each MC evaluation step is modelled as the aggregation of partial scores attributed to an operation w.r.t. a set of n criteria. Scores are expressed over a finite scale as labels. Our work has been to set up a consistent evaluation process that enables 1) experts to express their judgement values in their own discrete semantic universe, 2) to convert the labels in adequate numerical values using the MACBETH method and clustering techniques, 3) to compute the WAM based aggregated value and convert it in return into the experts' semantic universe 4) to carry out a robustness analysis of the evaluation process to assess the risk of misclassification of the operations and to diagnose them. This method is implemented in an IPS --SINERGIE -- that supports decisions concerning maintenance operations planning through adequate information processing procedure.