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논문 기본 정보

자료유형
학술저널
저자정보
Sung Boo Park (Pusan National University) Seong Yun Shin (Pusan National University) Kwang Hyo Jung (Pusan National University) Byung Gook Lee (Dongseo University)
저널정보
한국해양공학회 한국해양공학회지 한국해양공학회지 제35권 제5호(통권 제162호)
발행연도
2021.10
수록면
336 - 346 (11page)

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초록· 키워드

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The prediction of wave conditions is crucial in the field of marine and ocean engineering. Hence, this study aims to predict the significant wave height through machine learning (ML), a soft computing method. The adopted metocean data, collected from 2012 to 2020, were obtained from the Korea Institute of Ocean Science and Technology. We adopted the feedforward neural network (FNN) and long-short term memory (LSTM) models to predict significant wave height. Input parameters for the input layer were selected by Pearson correlation coefficients. To obtain the optimized hyperparameter, we conducted a sensitivity study on the window size, node, layer, and activation function. Finally, the significant wave height was predicted using the FNN and LSTM models, by varying the three input parameters and three window sizes. Accordingly, FNN (W48) (i.e., FNN with window size 48) and LSTM (W48) (i.e., LSTM with window size 48) were superior outcomes. The most suitable model for predicting the significant wave height was FNN(W48) owing to its accuracy and calculation time. If the metocean data were further accumulated, the accuracy of the ML model would have improved, and it will be beneficial to predict added resistance by waves when conducting a sea trial test.

목차

ABSTRACT
1. Introduction
2. Collection of Metocean Data andStatistical Analysis
3. Machine Learning (ML) Methodology
4. Results of Significant Wave Height Predictions Using the ML Model
5. Conclusion
References

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