High correlated variables creator machine: Prediction of the compressive strength of concrete

• URL: http://arxiv.org/abs/2009.06421v1
• Date: Fri, 11 Sep 2020 15:06:05 GMT
• Title: High correlated variables creator machine: Prediction of the compressive strength of concrete
• Authors: Aydin Shishegaran, Hessam Varaee, Timon Rabczuk, Gholamreza Shishegaran
• Abstract summary: We introduce a novel hybrid model for predicting the compressive strength of concrete using ultrasonic pulse velocity (UPV) and rebound number (RN) High correlated variables creator machine (HVCM) is used to create the new variables that have a better correlation with the output and improve the prediction models. The results show that HCVCM-ANFIS can predict the compressive strength of concrete better than all other models.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we introduce a novel hybrid model for predicting the compressive strength of concrete using ultrasonic pulse velocity (UPV) and rebound number (RN). First, 516 data from 8 studies of UPV and rebound hammer (RH) tests was collected. Then, high correlated variables creator machine (HVCM) is used to create the new variables that have a better correlation with the output and improve the prediction models. Three single models, including a step-by-step regression (SBSR), gene expression programming (GEP) and an adaptive neuro-fuzzy inference system (ANFIS) as well as three hybrid models, i.e. HCVCM-SBSR, HCVCM-GEP and HCVCM-ANFIS, were employed to predict the compressive strength of concrete. The statistical parameters and error terms such as coefficient of determination, root mean square error (RMSE), normalized mean square error (NMSE), fractional bias, the maximum positive and negative errors, and mean absolute percentage error (MAPE), were computed to evaluate and compare the models. The results show that HCVCM-ANFIS can predict the compressive strength of concrete better than all other models. HCVCM improves the accuracy of ANFIS by 5% in the coefficient of determination, 10% in RMSE, 3% in NMSE, 20% in MAPE, and 7% in the maximum negative error.

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