TY - JOUR
T1 - Prediction of rock brittleness using genetic algorithm and particle swarm optimization techniques
AU - Yagiz, Saffet
AU - Ghasemi, Ebrahim
AU - Adoko, Amoussou Coffi
N1 - Publisher Copyright:
© 2018, Springer International Publishing AG, part of Springer Nature.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Determining the rock brittleness is often needed in a wide range of rock engineering projects; however, direct measurement of the brittleness are expensive, time consuming and also the test devices is not available in every laboratory. Due to that, assessing the brittleness of rock as a function of some rock properties such as uniaxial compressive strength, Brazilian tensile strength and density of rock is unavoidable. The aim of this paper is to develop predictive models for estimating the rock brittleness using two techniques, genetic algorithm (GA) and particle swarm optimization (PSO). For this aim, four different models including linear and non-linear were developed using GA and PSO techniques. Further, in order to validate the accuracy of proposed models, various statistical indices including the root mean square error (RMSE), the variance account for (VAF), the coefficient of determination (R2) and performance index (PI) were computed and utilized herein. The values RMSE, VAF, R2 and PI ranged between 2.64–5.25, 82.58–93.06%, 0.851–0.932 and 1.480–1.708, respectively; with the quadratic form of the GA approach indicating the best performance. It is concluded that both the GA and PSO techniques could be utilized for predicting the rock brittleness; however, GA-quadratic model is superior.
AB - Determining the rock brittleness is often needed in a wide range of rock engineering projects; however, direct measurement of the brittleness are expensive, time consuming and also the test devices is not available in every laboratory. Due to that, assessing the brittleness of rock as a function of some rock properties such as uniaxial compressive strength, Brazilian tensile strength and density of rock is unavoidable. The aim of this paper is to develop predictive models for estimating the rock brittleness using two techniques, genetic algorithm (GA) and particle swarm optimization (PSO). For this aim, four different models including linear and non-linear were developed using GA and PSO techniques. Further, in order to validate the accuracy of proposed models, various statistical indices including the root mean square error (RMSE), the variance account for (VAF), the coefficient of determination (R2) and performance index (PI) were computed and utilized herein. The values RMSE, VAF, R2 and PI ranged between 2.64–5.25, 82.58–93.06%, 0.851–0.932 and 1.480–1.708, respectively; with the quadratic form of the GA approach indicating the best performance. It is concluded that both the GA and PSO techniques could be utilized for predicting the rock brittleness; however, GA-quadratic model is superior.
KW - Brittleness
KW - Genetic algorithm
KW - Particle swarm optimization
KW - Predictive model
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U2 - 10.1007/s10706-018-0570-3
DO - 10.1007/s10706-018-0570-3
M3 - Article
AN - SCOPUS:85046545161
SN - 0960-3182
VL - 36
SP - 3767
EP - 3777
JO - Geotechnical and Geological Engineering
JF - Geotechnical and Geological Engineering
IS - 6
ER -