Sustainable Applications for Machine Learning—2nd Edition

A special issue of Machine Learning and Knowledge Extraction (ISSN 2504-4990). This special issue belongs to the section "Learning".

Deadline for manuscript submissions: 31 December 2027 | Viewed by 579

Special Issue Editors


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Guest Editor
School of Computing, Engineering and Physical Sciences, University of the West of Scotland, London Campus, London G72 0LH, UK
Interests: artificial intelligence; machine learning; deep learing; cyberseucirty
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Guest Editor
School of Business, Computing and Social Sciences, University of Gloucestershire, The Park Campus, Gloucester GL50 2RH, UK
Interests: security in IoT devices; wireless sensor networks; smart grid
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Guest Editor
Future Technology Research Center, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan
Interests: internet of things; wireless networks; wearable computing; fog/cloud computing; big data
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The smart-everything wave and advancements in AI have caused a paradigm shift across every aspect of modern life. Additionally, the pervasive nature of information systems has generated voluminous data that must be processed, analyzed, and interpreted. While earlier approaches are no longer effective in dealing with such a sheer amount of digital data, AI offers many opportunities and solutions.

Within the realm of AI, machine learning (ML) is playing a pivotal role, enabling advanced solutions across a wide range of applications, including autonomous systems, medical/satellite image processing, chatbots, robotics, and financial technology. Given ML's governance across numerous domains, its sustainability should be a top priority now more than ever. This becomes more critical as sensitive businesses and major players such as governments, banks, giant tech companies, and smart factories increasingly use ML.

This Special Issue aims to collate the latest findings on the challenges and state-of-the-art solutions for the sustainability of ML and its applications.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Dependability of machine learning models;
  • Acceleration of deep neural networks;
  • Privacy-preserving aspects of machine learning;
  • Reliability assessment of deep learning systems;
  • Multi-agent systems in reinforcement learning;
  • Privacy concerns in federated learning approaches;
  • Artificial neural network applications in a circular economy;
  • Sustainability of natural language processing models;
  • Optimization in machine learning;
  • Recommender systems;
  • Graph neural network analysis;
  • Reliability in ensemble learning;
  • Security aspects of generative models;
  • Ethical issues with AI/ML;
  • Machine learning applications in healthcare;
  • Computer vision applications in smart cities;
  • Machine learning for business continuity;
  • Machine learning for sustainable supply chains;
  • The role of ML/DL in Industry 4.0.

We look forward to receiving your contributions.

Dr. Danial Javaheri
Prof. Dr. Hassan Chizari
Prof. Dr. Amir Masoud Rahmani
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Machine Learning and Knowledge Extraction is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • machine learning
  • deep learning
  • artificial neural networks
  • reinforcement learning
  • sustainable computing
  • big data analytics
  • optimization
  • data mining

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Published Papers (1 paper)

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Research

24 pages, 2768 KB  
Article
Enhancing Wearable-Based Elderly Activity Recognition Through a Hybrid Deep Residual Network
by Sakorn Mekruksavanich and Anuchit Jitpattanakul
Mach. Learn. Knowl. Extr. 2026, 8(4), 107; https://doi.org/10.3390/make8040107 - 18 Apr 2026
Viewed by 224
Abstract
The rapid growth of the elderly population worldwide demands reliable activity recognition technologies to support independent living and continuous health supervision. However, conventional wearable sensor-based human activity recognition (HAR) techniques often fail to capture the complex temporal behaviour and subtle motion patterns characteristic [...] Read more.
The rapid growth of the elderly population worldwide demands reliable activity recognition technologies to support independent living and continuous health supervision. However, conventional wearable sensor-based human activity recognition (HAR) techniques often fail to capture the complex temporal behaviour and subtle motion patterns characteristic of the elderly. To address these limitations, this study introduces a hybrid deep residual architecture—CNN-CBAM-BiGRU—that integrates convolutional neural networks (CNNs), the convolutional block attention module (CBAM), and bidirectional gated recurrent units (BiGRUs) to improve activity recognition using inertial measurement unit (IMU) data. In the proposed CNN-CBAM-BiGRU framework, CNN layers automatically derive representative features from raw sensor signals, CBAM applies adaptive channel and spatial attention to highlight informative patterns, and BiGRU captures long-range temporal relationships within activity sequences. The approach was evaluated on three benchmark datasets designed for elderly populations—HAR70+, HARTH, and SisFall—covering daily activities and fall events. The proposed model consistently outperforms existing methods across all datasets, achieving accuracies exceeding 96%, F1-scores above 93%, and a fall detection recall of 93.74%, confirming its robustness and suitability for safety-critical monitoring applications. Class-level evaluation indicates excellent recognition of static postures and consistent performance for dynamic actions. Convergence analysis further confirms efficient learning with limited overfitting across datasets. The proposed framework thus provides a robust and accurate solution for wearable-based elderly activity recognition, with strong potential for deployment in fall detection, health monitoring, and ambient assisted living systems. Full article
(This article belongs to the Special Issue Sustainable Applications for Machine Learning—2nd Edition)
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