Machine Learning and Related Statistical Applications in Complex Systems

A special issue of Technologies (ISSN 2227-7080). This special issue belongs to the section "Information and Communication Technologies".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 1348

Special Issue Editors


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Department of Engineering and Technology, East Texas A&M University, Commerce, TX, USA
Interests: systems biology and modeling; analysis of complex biological systems; applied machine learning and related statistical applications in complex systems; ultra-wideband radio frequency receivers based on folding and compressive sensing; innovation in engineering and engineering education

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Guest Editor
Ontological Semantic Technology Lab, East Texas A&M University, Commerce, TX, USA
Interests: linguistics; cognitive semantics; computational linguistics; humor
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Special Issue Information

Dear Colleagues,

The application of machine learning (ML) technologies has expanded exponentially in recent years, such that ML is now used in a wide number of fields. However, the widespread use of ML has also been accompanied by a number of challenges, including how best to apply ML in complex systems involving interdisciplinary coordination, the reliability and trustworthiness of ML outcomes, and time and resources to train complex system ML applications. Thus, we anticipate that the successful application of ML to complex systems and methods to tackle ML challenges in complex systems will be of interest to both the researchers and practitioners of ML.

We are, therefore, pleased to announce a Special Issue focusing on “Machine Learning and Related Statistical Applications in Complex Systems”. The goal of this Special Issue is to provide a venue for researchers and practitioners to share their latest results, including successful applications, innovative methodologies, and novel approaches to handle ML challenges in complex systems. We invite submissions on a wide range of topics involving ML and related statistical applications in complex systems falling within the two broad areas below:

  • Analysis, prediction, classification, and design problems in complex systems, including power systems, transportation systems, financial systems, autonomous vehicles, biological systems, ecosystems, epidemiological modeling, climate modeling, geological modeling, etc.
  • Challenges with ML applications, including the safety and reliability of ML in complex systems, such as autonomous vehicles, application of explainable AI (XAI) to complex systems, training bias in real-world applications, data acquisition and training time for complex systems, and application of hardware technologies to accelerate development and implementation of embedded ML systems.

Dr. Gerald L. Fudge
Dr. Christian F. Hempelmann
Guest Editors

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Keywords

  • complex systems
  • machine learning
  • explainable AI (XAI)
  • statistical applications

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Published Papers (2 papers)

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Research

23 pages, 4656 KiB  
Article
A Hybrid Intelligent Model for Olympic Medal Prediction Based on Data-Intelligence Fusion
by Ning Li, Junhao Li, Hejia Fang, Jian Wang, Qiao Yu and Yafei Shi
Technologies 2025, 13(6), 250; https://doi.org/10.3390/technologies13060250 - 13 Jun 2025
Viewed by 325
Abstract
This study presents a hybrid intelligent model for predicting Olympic medal distribution at the 2028 Los Angeles Games, based on data-intelligence fusion (DIF). By integrating historical medal records, athlete performance metrics, debut medal-winning countries, and coaching resources, the model aims to provide accurate [...] Read more.
This study presents a hybrid intelligent model for predicting Olympic medal distribution at the 2028 Los Angeles Games, based on data-intelligence fusion (DIF). By integrating historical medal records, athlete performance metrics, debut medal-winning countries, and coaching resources, the model aims to provide accurate national medal forecasts. The model introduces a Performance Score (PS) system combining a Traditional Advantage Index (TAI) via K-means clustering, an Athlete Strength Index (ASI) using a backpropagation neural network, and a Host effect factor. Sub-models include an autoregressive integrated moving average model for time-series forecasting, logistic regression for predicting debut medal-winning countries, and random forest regression to quantify the “Great Coach” effect. The results project America winning 44 gold and 124 total medals, and China 44 gold and 94 total medals. The model demonstrates strong accuracy with root mean square errors of 3.21 (gold) and 4.32 (total medals), and mean-relative errors of 17.6% and 8.04%. Compared to the 2024 Paris Olympics, the model projects a notable reshuffling in 2028, with the United States expected to strengthen its overall lead as host while countries like France are predicted to experience significant declines in medal counts. Findings highlight the nonlinear impact of coaching and event expansion’s role in medal growth. This model offers a strategic tool for Olympic planning, advancing medal prediction from simple extrapolation to intelligent decision support. Full article
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23 pages, 2955 KiB  
Article
Numerical Simulations of Scaling of the Chamber Dimensions of the Liquid Piston Compressor for Hydrogen Applications
by Marina Konuhova, Valerijs Bezrukovs, Vladislavs Bezrukovs, Deniss Bezrukovs, Maksym Buryi, Nikita Gorbunovs and Anatoli I. Popov
Technologies 2025, 13(6), 226; https://doi.org/10.3390/technologies13060226 - 3 Jun 2025
Viewed by 862
Abstract
Hydrogen compression is a critical process in hydrogen storage and distribution, particularly for energy infrastructure and transportation. As hydrogen technologies expand beyond limited industrial applications, they are increasingly supporting the green economy, including offshore energy systems, smart ports, and sustainable marine industries. Efficient [...] Read more.
Hydrogen compression is a critical process in hydrogen storage and distribution, particularly for energy infrastructure and transportation. As hydrogen technologies expand beyond limited industrial applications, they are increasingly supporting the green economy, including offshore energy systems, smart ports, and sustainable marine industries. Efficient compression technologies are essential for ensuring reliable hydrogen storage and distribution across these sectors. This study focuses on optimizing hydrogen compression using a Liquid Piston Hydrogen Compressor through numerical simulations and scaling analysis. The research examines the influence of compression chamber geometry, including variations in radius and height, on thermal behavior and energy efficiency. A computational model was developed using COMSOL Multiphysics® 6.0, incorporating Computational Fluid Dynamics (CFD) and heat transfer modules to analyze thermodynamic processes. The results highlight temperature distribution in hydrogen, working fluid, and chamber walls at different initial pressures (3.0 MPa and 20.0 MPa) and compression stroke durations. Larger chamber volumes lead to higher temperature increases but reach thermal stabilization. Increasing the chamber volume allows for a significant increase in the performance of the hydraulic compression system with a moderate increase in the temperature of hydrogen. These findings provide insights into optimizing hydrogen compression for enhanced production and broader applications. Full article
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