Journal
MATHEMATICAL BIOSCIENCES AND ENGINEERING
Volume 18, Issue 6, Pages 9233-9252Publisher
AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/mbe.2021454
Keywords
bayesian belief network; cone penetration test; liquefaction potential; interpretive structural modeling; sensitivity analysis
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This study introduces a probabilistic graphical model that integrates ISM and BBN methods to predict soil liquefaction potential based on CPT. The model combines major factors triggering soil liquefaction and evaluates the rate of successful prediction of liquefaction events. It proves to be more effective compared to other methods such as logistic regression and support vector machine.
This paper proposes a probabilistic graphical model that integrates interpretive structural modeling (ISM) and Bayesian belief network (BBN) approaches to predict cone penetration test (CPT)-based soil liquefaction potential. In this study, an ISM approach was employed to identify relationships between influence factors, whereas BBN approach was used to describe the quantitative strength of their relationships using conditional and marginal probabilities. The proposed model combines major causes, such as soil, seismic and site conditions, of seismic soil liquefaction at once. To demonstrate the application of the propose framework, the paper elaborates on each phase of the BBN framework, which is then validated with historical empirical data. In context of the rate of successful prediction of liquefaction and non-liquefaction events, the proposed probabilistic graphical model is proven to be more effective, compared to logistic regression, support vector machine, random forest and naive Bayes methods. This research also interprets sensitivity analysis and the most probable explanation of seismic soil liquefaction appertaining to engineering perspective.
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