Shoreline Change Forecasting on Eretan Beach using Long Short Term Memory

Eretan Beach located in Kandanghaur, Indramayu is one of the beaches in Indramayu with a very severe level of abrasion. Therefore, understanding of shoreline change of the beach becomes an important matter. Long Short Term Memory (LSTM) is implemented to study the shoreline change of the beach. Eight optimizers such as Follow-the-Regularized-Leader (FTRL), Stochastic Gradient Descent (SGD), Adaptive Gradient (AdaGrad), Adadelta, Root Mean Square Propagation (RMSProp), Adaptive moment (Adam), Adamax, and Nesterov Adam (Nadam) are used to increase the accuracy of the LSTM method. It shows that RMSProp, Adam, Adamax, and Nadam are in good comparison with actual shoreline data obtained from the google earth engine using the open-source software toolkit CoastSat of the beach. Further, the RMSProp outperforms the other optimizers.