Pseudo credal networks for inference with probability intervals

Estrada-Lugo, Hector Diego and Tolo, Silvia and De Angelis, Marco and Patelli, Edoardo (2019) Pseudo credal networks for inference with probability intervals. ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, 5 (4). 041010. ISSN 2332-9025

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    Abstract

    The computation of the inference corresponds to an NP-hard problem even for a single connected credal network. The novel concept of pseudo networks is proposed as an alternative to reduce the computational cost of probabilistic inference in credal networks and overcome the computational cost of existing methods. The method allows identifying the combination of intervals that optimizes the probability values of each state of the queried variable from the credal network. In the case of no evidence, the exact probability bounds of the query variable are calculated. When new evidence is inserted into the network, the outer and inner approximations of the query variable are computed by means of the marginalization of the joint probability distributions of the pseudo networks. The applicability of the proposed methodology is shown by solving numerical case studies.

    Creators(s): Estrada-Lugo, Hector Diego, Tolo, Silvia, De Angelis, Marco and Patelli, Edoardo ORCID logoORCID: https://orcid.org/0000-0002-5007-7247;
    Item type:Article
    ID code:71229
    Keywords:approximation, computation, probability, Engineering (General). Civil engineering (General), Safety, Risk, Reliability and Quality, Safety Research, Mechanical Engineering
    Subjects:Technology > Engineering (General). Civil engineering (General)
    Department:Faculty of Engineering > Civil and Environmental Engineering
    Depositing user: Pure Administrator
    Date deposited:28 Jan 2020 11:54
    Last modified:26 Sep 2020 02:17
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/71229
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