The feasibility of reliably generating bioenergy from forest biomass waste is intimately linked to supply chain and production processing costs. These costs are, at least in part, directly related to assumptions about the reliability and cost-efficiency of the machinery used along the forestry bioenergy supply chain. Although mechanization in forestry operations has advanced in the last 20 years, it is evident that challenges remain in relation to production capability, standardization of wood quality, and supply guarantee from forestry resources because of the age and reliability of the machinery. An important component in sustainable bioenergy from biomass supply chains will be confidence in consistent production costs linked to guarantees about harvest and haulage machinery reliability. In this context, this paper examines the issue of machinery maintenance and advances in machine learning and big data analysis that are contributing to improved intelligent prediction that is aiding supply chain reliability in bioenergy from woody biomass. The concept of “Industry 4.0” refers to the integration of numerous technologies and business processes that are transforming many aspects of conventional industries. In the realm of machinery maintenance, the dramatic increase in the capacity to dynamically collect, collate, and analyze data inputs including maintenance archive data, sensor-based monitoring, and external environmental and contextual variables. Big data analytics offers the potential to enhance the identification and prediction of maintenance (PdM) requirements. Given that estimates of costs associated with machinery maintenance vary between 20% and 60% of the overall costs, the need to find ways to better mitigate these costs is important. While PdM has been shown to help, it is noticeable that to-date there has been limited assessment of the impacts of external factors such as weather condition, operator experiences and/or operator fatigue on maintenance costs, and in turn the accuracy of maintenance predictions. While some researchers argue these data are captured by sensors on machinery components, this remains to be proven and efforts to enhance weighted calibrations for these external factors may further contribute to improving the prediction accuracy of remaining useful life (RUL) of machinery. This paper reviews and analyzes underlying assumptions embedded in different types of data used in maintenance regimes and assesses their quality and their current utility for predictive maintenance in forestry. The paper also describes an approach to building ‘intelligent’ predictive maintenance for forestry by incorporating external variables data into the computational maintenance model. Based on these insights, the paper presents a model for an intelligent predictive maintenance system (IPdM) for forestry and a method for its implementation and evaluation in the field.
Student dropout rates continue to present major difficulties for educational institutions, leading to academic, operational, and financial impacts. Educational Data Mining (EDM) methods, particularly those combining clustering techniques with predictive models, have demonstrated potential in identifying at-risk students early and accurately. This systematic review explores how cluster-based prediction models have been applied in educational contexts to enhance student performance prediction. A total of sixty-one relevant studies published between 2010 and 2025 were selected and analysed using PRISMA guidelines. The review focuses on the clustering techniques used, how these are integrated with predictive models, and what types of student data are involved. Key findings show that cluster-based models help capture behavioural and academic differences among students, which enables educational institutions to provide more adaptable support. The review also highlights challenges related to generalisability, scalability, and ethical concerns, especially when applying models across different institutions or datasets. The main contribution of this study is the identification of how clustering can be used not only to segment student populations but also to improve prediction accuracy by tailoring models to each subgroup. This review contributes to the literature by emphasising the practical benefits of cluster-based predictive modelling and providing clear directions for further studies aimed at reducing student dropout through targeted support.
16 October 2024 in IEEE Transactions on Intelligent Transportation Systems
Drivers can be identified through patterns in their routine driving behaviours, as observed by analysing the timing and sequence of various manoeuvres. In contemporary mobility contexts, comprehending and accurately predicting drivers’ behaviours are crucial for informing efficient transportation planning, enhancing traffic safety, reducing emissions, and improving driving efficiency. An increasing number of researchers have explored a variety of machine learning (ML) models to identify, classify, and predict drivers’ behaviours. However, the reliability of these results is often undermined by the complexities associated with the data characteristics, contexts, and the authors’ expertise. Additionally, there is a lack of comprehensive investigation into the effect of driving behaviour on vehicles’ performance, driver identity, and driving activities. This research aims to compare various ML methods to establish a conclusive and generalisable empirical benchmark. The experiments were divided into three phases: estimation of fuel consumption, driver identification, and driver actions’ prediction from drivers’ behaviour during motion. The experiments evaluate prediction accuracy, performance, and computational cost using a different range of temporal and nontemporal ML models and eight datasets from diverse sources, which resulted in 9 tables of outputs. The results have been gauged and scored precisely, and then high-rated and ineffective algorithms were pinpointed for each task. This study is the most in-depth investigation, providing an exhaustive comparison of different ML models for predicting three main criteria of driving behaviour, marking it as the most detailed investigation in this field.