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Article

A CNN-LSTM Model Based on a Meta-Learning Algorithm to Predict Groundwater Level in the Middle and Lower Reaches of the Heihe River, China

School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, China
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Academic Editor: Chin H Wu
Water 2022, 14(15), 2377; https://doi.org/10.3390/w14152377
Received: 9 June 2022 / Revised: 28 July 2022 / Accepted: 29 July 2022 / Published: 31 July 2022
(This article belongs to the Section Hydrogeology)
In this study, a deep learning model is proposed to predict groundwater levels. The model is able to accurately complete the prediction task even when the data utilized are insufficient. The hybrid model that we have developed, CNN-LSTM-ML, uses a combined network structure of convolutional neural networks (CNN) and long short-term memory (LSTM) network to extract the time dependence of groundwater level on meteorological factors, and uses a meta-learning algorithm framework to ensure the network’s performance under sample conditions. The study predicts groundwater levels from 66 observation wells in the middle and lower reaches of the Heihe River in arid regions and compares them with other data-driven models. Experiments show that the CNN-LSTM-ML model outperforms other models in terms of prediction accuracy in both the short term (1 month) and long term (12 months). Under the condition that the training data are reduced by 50%, the MAE of the proposed model is 33.6% lower than that of LSTM. The results of ablation experiments show that CNN-LSTM-ML is 26.5% better than the RMSE of the original CNN-LSTM structure. The model provides an effective method for groundwater level prediction and contributes to the sustainable management of water resources in arid regions. View Full-Text
Keywords: groundwater level prediction; CNN; LSTM; meta-learning; CNN-LSTM-ML; multiple influences; few samples groundwater level prediction; CNN; LSTM; meta-learning; CNN-LSTM-ML; multiple influences; few samples
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MDPI and ACS Style

Yang, X.; Zhang, Z. A CNN-LSTM Model Based on a Meta-Learning Algorithm to Predict Groundwater Level in the Middle and Lower Reaches of the Heihe River, China. Water 2022, 14, 2377. https://doi.org/10.3390/w14152377

AMA Style

Yang X, Zhang Z. A CNN-LSTM Model Based on a Meta-Learning Algorithm to Predict Groundwater Level in the Middle and Lower Reaches of the Heihe River, China. Water. 2022; 14(15):2377. https://doi.org/10.3390/w14152377

Chicago/Turabian Style

Yang, Xingyu, and Zhongrong Zhang. 2022. "A CNN-LSTM Model Based on a Meta-Learning Algorithm to Predict Groundwater Level in the Middle and Lower Reaches of the Heihe River, China" Water 14, no. 15: 2377. https://doi.org/10.3390/w14152377

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