An Early Stopping-Based Artificial Neural Network Model for Atmospheric Corrosion Prediction of Carbon Steel

The optimization of network topologies to retain the generalization ability by deciding when to stop overtraining an artificial neural network (ANN) is an existing vital challenge in ANN prediction works. The larger the dataset the ANN is trained with, the better generalization the prediction can gi...

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Vydáno v:Computers, materials & continua Ročník 65; číslo 3; s. 2091 - 2109
Hlavní autoři: Hnin Thike, Phyu, Zhao, Zhaoyang, Liu, Peng, Bao, Feihu, Jin, Ying, Shi, Peng
Médium: Journal Article
Jazyk:angličtina
Vydáno: Henderson Tech Science Press 2020
Témata:
Algorithms
Artificial neural networks
Atmospheric corrosion
Atmospheric models
Back propagation networks
Carbon steel
Carbon steels
Correlation coefficients
Datasets
Multilayers
Network topologies
Neural networks
Prediction models
Topology optimization
ISSN:1546-2226, 1546-2218, 1546-2226
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Shrnutí:The optimization of network topologies to retain the generalization ability by deciding when to stop overtraining an artificial neural network (ANN) is an existing vital challenge in ANN prediction works. The larger the dataset the ANN is trained with, the better generalization the prediction can give. In this paper, a large dataset of atmospheric corrosion data of carbon steel compiled from several resources is used to train and test a multilayer backpropagation ANN model as well as two conventional corrosion prediction models (linear and Klinesmith models). Unlike previous related works, a grid searchbased hyperparameter tuning is performed to develop multiple hyperparameter combinations (network topologies) to train multiple ANNs with mini-batch stochastic gradient descent optimization algorithm to facilitate the training of a large dataset. After that, one selection strategy for the optimal hyperparameter combination is applied by an early stopping method to guarantee the generalization ability of the optimal network model. The correlation coefficients (R) of the ANN model can explain about 80% (more than 75%) of the variance of atmospheric corrosion of carbon steel, and the root mean square errors (RMSE) of three models show that the ANN model gives a better performance than the other two models with acceptable generalization. The influence of input parameters on the output is highlighted by using the fuzzy curve analysis method. The result reveals that TOW, Cl- and SO2 are the most important atmospheric chemical variables, which have a well-known nonlinear relationship with atmospheric corrosion.
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ISSN:1546-2226
1546-2218
1546-2226
DOI:10.32604/cmc.2020.011608