稳健性(进化)
离散化
海况
频域
计算机科学
人工神经网络
人工智能
时域
容器(类型理论)
机器学习
浮标
工程类
海洋工程
数学
计算机视觉
机械工程
数学分析
生物化学
化学
基因
地质学
海洋学
作者
Malte Mittendorf,Ulrik Dam Nielsen,Harry B. Bingham,Gaute Storhaug
标识
DOI:10.1016/j.marstruc.2022.103274
摘要
This paper is concerned with a machine learning-based approach for sea state estimation using the wave buoy analogy. In-situ sensor data of an advancing medium-size container vessel has been utilized for the prediction of integral sea state parameters. The main novelty of this contribution is the rigorous comparison of time and frequency domain models in terms of accuracy, robustness and computational cost. The frequency domain model is trained on sequences of spectral ordinates derived from cross response spectra, while the time domain model is applied to 5-minute time series of ship responses. Multiple deep neural networks were trained and the sensitivity of individual sensor recordings, sample length, and frequency discretization on estimation accuracy was analysed. An Inception Architecture adapted for sequential data yields the highest out of sample performance in both considered domains. Additionally, multi-task learning was employed, as it is known for increased generalization capability and diminished uncertainty. Overall, it was found that the frequency domain method provides both superior performance and significantly less computational effort for training.
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