Article ID Journal Published Year Pages File Type
380670 Engineering Applications of Artificial Intelligence 2013 9 Pages PDF
Abstract

This paper investigates the use of wavelet ensemble models for high performance concrete (HPC) compressive strength forecasting. More specifically, we incorporate bagging and gradient boosting methods in building artificial neural networks (ANN) ensembles (bagged artificial neural networks (BANN) and gradient boosted artificial neural networks (GBANN)), first. Coefficient of determination (R2), mean absolute error (MAE) and the root mean squared error (RMSE) statics are used for performance evaluation of proposed predictive models. Empirical results show that ensemble models (R2BANN=0.9278, R2GBANN=0.9270) are superior to a conventional ANN model (R2ANN=0.9088). Then, we use the coupling of discrete wavelet transform (DWT) and ANN ensembles for enhancing the prediction accuracy. The study concludes that DWT is an effective tool for increasing the accuracy of the ANN ensembles (R2WBANN=0.9397, R2WGBANN=0.9528).

Related Topics
Physical Sciences and Engineering Computer Science Artificial Intelligence
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