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ORIGINAL PAPER
Stochastic Environmental Research and Risk Assessment (2025) 39:1059–1076
https://doi.org/10.1007/s00477-025-02907-3
al. 2024b). Process-driven modeling is complex and has
stringent data requirements, which many watersheds often
cannot meet (Granata and Fabio Di Nunno 2024; Xu et al.
2021). In contrast, data-driven modeling requires less infor-
mation, oers greater adaptability, and demonstrates better
prediction performance. As a result, data-driven modeling
is becoming increasingly popular in practical applications
(Wu et al. 2023). In data-driven modeling, traditional pre-
diction methods, such as auto-regressive moving average
model and multiple linear regression model, are commonly
used. While these methods have a fast computational speed,
they often struggle to provide satisfactory predictions for
nonlinear and non-stationary runo series (AlDahoul et al.
2023).
The application of articial intelligence has led to machine
learning (ML) becoming the most widely used method for
forecasting (Ditthakit et al. 2023). ML can uncover deep
connections within time series data, build complex nonlin-
ear high-dimensional models, and establish corresponding
mathematical relationships to address nonlinear problems,
thereby enhancing the reliability of nonlinear time series
1 Introduction
Runo is a crucial stochastic variable in various environ-
mental processes, and its spatial and temporal variability
directly impacts local and global water, energy and matter
cycles. Accurate and reliable runo forecasting is vital for
preventing oods and droughts, as well as for the ecient
and rational utilisation of water resources. This is signicant
for promoting sustainable development of society (Wang
and Peng 2024a). However, runo is highly stochastic and
non-stationarity in nature due to the inuence of multiple
factors, which makes accurate runo prediction challenging
(Zhao et al. 2021).
There are currently two approaches to predicting run-
o: process-driven and data-driven methods (Wang et
Xuehua Zhao
zhaoxh688@126.com
1 College of Water Resources Science and Engineering,
Taiyuan University of Technology, Taiyuan 030024, China
Abstract
Accurate and timely runo prediction is essential for eective water resource management and controlling oods and
droughts. However, the stochasticity of runo due to environmental changes and human activities poses a signicant
challenge in achieving reliable predictions. This paper presents a multi-scale two-phase processing strategy to develop a
hybrid model for runo prediction. In the rst phase of model design, the improved complete ensemble empirical mode
decomposition with adaptive noise (ICEEMDAN) is utilised to identify signicant frequencies in the non-stationary tar-
get data series. The inputs to the model are decomposed into intrinsic modal functions during this stage. In the second
phase, the swarm decomposition (SWD) is used to decompose high-frequency components with consistently high values
of time-shift multi-scale weighted permutation entropy (TSMWPE) into sub-sequences. This permits further identication
and establishment of data attributes that are incorporated into the extreme learning machine (ELM) algorithm. The ELM
then simulates the series of component data, creating a comprehensive tool for runo prediction. The hybrid model dem-
onstrates exceptional accuracy, achieving a Nash-Sutclie eciency greater than 0.95 and a qualication rate exceeding
0.93. This model can be utilised in decision-making systems as an ecient and accurate solution for generating reliable
predictions, particularly for hydrological challenges characterized by non-stationary data.
Keywords ICEEMDAN · ELM · Runo prediction · SWD · TSMWPE
Accepted: 3 January 2025 / Published online: 19 January 2025
© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025
Runo prediction using a multi-scale two-phase processing hybrid
model
XuehuaZhao1· HuifangWang1· QiucenGuo1· JiatongAn1
1 3
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