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• W3012665130 abstract "Compression index C c is an essential parameter in geotechnical design for which the effectiveness of correlation is still a challenge. This paper suggests a novel modelling approach using machine learning (ML) technique. The performance of five commonly used machine learning (ML) algorithms, i.e. back-propagation neural network (BPNN), extreme learning machine (ELM), support vector machine (SVM), random forest (RF) and evolutionary polynomial regression (EPR) in predicting C c is comprehensively investigated. A database with a total number of 311 datasets including three input variables, i.e. initial void ratio e 0 , liquid limit water content w L , plasticity index I p , and one output variable C c is first established. Genetic algorithm (GA) is used to optimize the hyper-parameters in five ML algorithms, and the average prediction error for the 10-fold cross-validation (CV) sets is set as the fitness function in the GA for enhancing the robustness of ML models. The results indicate that ML models outperform empirical prediction formulations with lower prediction error. RF yields the lowest error followed by BPNN, ELM, EPR and SVM. If the ranges of input variables in the database are large enough, BPNN and RF models are recommended to predict C c . Furthermore, if the distribution of input variables is continuous, RF model is the best one. Otherwise, EPR model is recommended if the ranges of input variables are small. The predicted correlations between input and output variables using five ML models show great agreement with the physical explanation. This paper suggests a novel modelling approach using machine learning (ML) technique. The performance of five commonly used machine learning (ML) algorithms, i.e. back-propagation neural network (BPNN), extreme learning machine (ELM), support vector machine (SVM), random forest (RF) and evolutionary polynomial regression (EPR) in predicting Cc is comprehensively investigated. The results indicate that ML models outperform empirical prediction formulations with lower prediction error. RF yields the lowest error followed by BPNN, ELM, EPR and SVM. If the ranges of input variables in the database are large enough, BPNN and RF models are recommended to predict Cc. Furthermore, if the distribution of input variables is continuous, RF model is the best one. • Novel machine learning based models are proposed for predicting compression index of clays. • The performance of five commonly used machine learning algorithms in predicting Cc is comprehensively investigated. • BPNN and RF models are recommended to predict the compression index of clays." @default.
• W3012665130 created "2020-03-27" @default.
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• W3012665130 date "2021-01-01" @default.
• W3012665130 modified "2023-10-08" @default.
• W3012665130 title "Intelligent modelling of clay compressibility using hybrid meta-heuristic and machine learning algorithms" @default.
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• W3012665130 doi "https://doi.org/10.1016/j.gsf.2020.02.014" @default.
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