Geoacoustic and geophysical data‐driven seafloor sediment classification through machine learning algorithms with property‐centered oversampling techniques

This study aims to classify seafloor sediments using physics‐inspired and data‐driven soil models combined with machine learning algorithms and oversampling techniques. The field data used for the input variables include porosity, S‐ and P‐wave velocities and depth. The soil information reported in...

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Bibliographic Details
Published in:Computer-aided civil and infrastructure engineering Vol. 39; no. 14; pp. 2105 - 2121
Main Authors: Park, Junghee, Lee, Jong‐Sub, Yoon, Hyung‐Koo
Format: Journal Article
Language:English
Published: Hoboken Wiley Subscription Services, Inc 01.07.2024
Subjects:
Accuracy
Algorithms
Classification (sedimentation)
Effectiveness
Machine learning
Ocean floor
Oversampling
Performance enhancement
S waves
Sediments
Soil porosity
Wave velocity
ISSN:1093-9687, 1467-8667
Online Access:Get full text
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Summary:This study aims to classify seafloor sediments using physics‐inspired and data‐driven soil models combined with machine learning algorithms and oversampling techniques. The field data used for the input variables include porosity, S‐ and P‐wave velocities and depth. The soil information reported in the original literature and the “six reference sediments” and effective stress‐versus‐depth models proposed by the previous study confirm the sediment type across all of the input variables. We use three machine learning algorithms and four oversampling methods to enhance the performance accuracy and overcome data imbalance in the minority class. The results show that the averaged accuracy of sediment classification with original data corresponds to 0.88 for porosity, 0.61 for S‐wave velocity, and 0.97 for P‐wave velocity. In particular, the enhanced accuracy with oversampled input variables becomes more pronounced when the depth data are considered in a dataset. The class‐oriented grouping method newly proposed in this study appears to be a robust approach to enhancing performance. Surprisingly, model‐based input variables lead to the best performance in all cases. The proposed analyses conducted using machine learning algorithms and oversampling techniques within the physics‐inspired models could be extended to obtain a first‐order assessment of marine sediment properties.
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ISSN:1093-9687
1467-8667
DOI:10.1111/mice.13126