Research Article

EFFECT OF SEASONAL-TREND DECOMPOSITION ON MACHINE LEARNING-BASED SUSPENDED SEDIMENT LOAD PREDICTION PERFORMANCE

Volume: 28 Number: 1 March 3, 2025
EN TR

EFFECT OF SEASONAL-TREND DECOMPOSITION ON MACHINE LEARNING-BASED SUSPENDED SEDIMENT LOAD PREDICTION PERFORMANCE

Abstract

Forecasting of sediment is vital for water resources management. In this study, the machine learning-based prediction performance of suspended sediment load (SSL) at Bulakbaşı station of Kızılırmak River was investigated. Also, the effect of seasonal decomposition on the prediction performance was searched. Accordingly, Support Vector Machine (SVM), Adaptive Boosting (AdaBoost), and Generalized Regression Neural Network (GRNN) methods were used for SSL prediction. Grid Search (GS) algorithm was preferred for hyperparameter optimization. The seasonal component was obtained by Seasonal-Trend decomposition using the LOESS (STL) method. Six input combinations were generated using flow (Qt), flow lag (Qt-1), and the seasonal component of SSL (S-SSLt). According to the findings, AdaBoost (M6-NSETrain=0.914, M4-NSETest=0.765), SVM (M6-NSETrain=0.912, M6-NSETest=0.863), and GRNN (M6-NSETrain=0.912, M4-NSETest=0.834) models produced quite consistent results. In the test phase, SVM-M6 (R2=0.893, NSE=0.863) is the most successful model according to various evaluation metrics. It was also observed that the last three input combinations, where the seasonal component of SSL was added, generally improved the performance. For SVM in the test phase, which is the most successful model, R2=0.873, NSE=0.820 values were obtained in the combination without the seasonal component (M3), and R2=0.893, NSE=0.863 values were obtained in the combination with the seasonal component (M6)

Keywords

Thanks

The authors would like to thank the General Directorate of State Hydraulic Works for the data used in this study

References

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Details

Primary Language

English

Subjects

Water Resources Engineering

Journal Section

Research Article

Publication Date

March 3, 2025

Submission Date

June 17, 2024

Acceptance Date

December 20, 2024

Published in Issue

Year 2025 Volume: 28 Number: 1

APA
Köyceğiz, C., & Büyükyıldız, M. (2025). EFFECT OF SEASONAL-TREND DECOMPOSITION ON MACHINE LEARNING-BASED SUSPENDED SEDIMENT LOAD PREDICTION PERFORMANCE. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 28(1), 1-18. https://doi.org/10.17780/ksujes.1502136

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