Journal article

Benefits of using basic, imprecise or uncertain data for elaborating sewer inspection programmes

Mehdi Ahmadi, Frederic Cherqui, Jean-Christophe De Massiac, Pascal Le Gauffre

STRUCTURE AND INFRASTRUCTURE ENGINEERING | TAYLOR & FRANCIS LTD | Published : 2015

Abstract

One key goal of sewer inspection programmes is to target segments in the worst condition. Despite the development of deterioration models, the influence of available data on models’ predictive power has not been studied in depth yet. In this article, numerical experiments have been conducted to answer three main questions: (1) How can the data most probably available within a utility be used to define an effective inspection programme? (2) Can we use an auxiliary variable in order to compensate effects of missing data on inspection programmes? (3) Is it worth to accept a degree of uncertainty within data instead of not having them? In other words, is it preferable to have uncertainty instead..

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