نتایج جستجو برای: belief rule base

تعداد نتایج: 450824  

Real time and accurate fault detection has attracted an increasing attention with a growing demand for higher operational efficiency and safety of industrial gas turbines as complex engineering systems. Current methods based on condition monitoring data have drawbacks in using both expert knowledge and quantitative information for detecting faults. On account of this reason, this paper proposes...

2009
Salem Benferhat Didier Dubois Henri Prade Mary-Anne Williams

Intelligent agents require methods to revise their epistemic state as they acquire new information. Jeffrey’s rule, which extends conditioning to uncertain inputs, is used to revise probabilistic epistemic states when new information is uncertain. This paper analyses the expressive power of two possibilistic counterparts of Jeffrey’s rule for modeling belief revision in intelligent agents. We s...

Journal: :Expert Syst. Appl. 2007
Dong-Ling Xu Jun Liu Jian-Bo Yang Guo-Ping Liu Jin Wang Ian Jenkinson Jun Ren

Belief rule based expert systems are an extension of traditional rule based systems and are capable of representing more complicated causal relationships using different types of information with uncertainties. This paper describes how the belief rule based expert systems can be trained and used for pipeline leak detection. Pipeline operations under different conditions are modelled by a belief...

Journal: :European Journal of Operational Research 2012
Guilan Kong Dong-Ling Xu Richard Body Jian-Bo Yang Kevin Mackway-Jones Simon Carley

This paper describes a prototype clinical decision support system (CDSS) for risk stratification of patients with cardiac chest pain. A newly developed belief rule-based inference methodology-RIMER was employed for developing the prototype. Based on the belief rule-based inference methodology, the prototype CDSS can deal with uncertainties in both clinical domain knowledge and clinical data. Mo...

Journal: :Journal of Logic, Language and Information 2016
Guido Boella Gabriella Pigozzi Leon van der Torre

In this paper we study AGM contraction and revision of rules using input/output logical theories. We replace propositional formulas in the AGM framework of theory change by pairs of propositional formulas, representing the rule based character of theories, and we replace the classical consequence operator Cn by an input/output logic. The results in this paper suggest that, in general, results f...

Journal: :Annals OR 2008
Jun Liu Jian-Bo Yang Da Ruan Luis Martínez-López Jin Wang

A framework for modelling the safety of an engineering system using a fuzzy rule-based evidential reasoning (FURBER) approach has been recently proposed, where a fuzzy rule-base designed on the basis of a belief structure (called a belief rule base) forms a basis in the inference mechanism of FURBER. However, it is difficult to accurately determine the parameters of a fuzzy belief rule base (FB...

Journal: :Expert Syst. Appl. 2011
Bin Li Hongwei Wang Jian-Bo Yang Min Guo Chao Qi

This paper is devoted to investigating inventory control problems under nonstationary and uncertain demand. A belief-rule-based inventory control (BRB-IC) method is developed, which can be applied in situations where demand and demand-forecast-error (DFE) do not follow certain stochastic distribution and forecasting demand is given in single-point or interval styles. The method can assist decis...

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