ProWaste for proactive urban waste management using IoT and machine learning.
Journal:
Scientific reports
Published Date:
Jul 30, 2025
Abstract
Urban waste-collection centres (WCCs) routinely overflow because maintenance routes are scheduled reactively rather than on data-driven forecasts. Overspill, odour, and leachate therefore threaten public health and sustainability targets in rapidly growing smart cities. We introduce ProWaste, an end-to-end Internet-of-Things and machine-learning platform that proactively prioritises WCC servicing. Fifteen automated and manual indicators, including population density, weather, maintenance history, and weekly waste build-up, are streamed from low-cost sensors, public APIs, and a mobile app to a cloud database. Twenty-five off-the-shelf classifiers were benchmarked under repeated stratified cross-validation; a Decision Tree Classifier offered the best balance of interpretability and near-top accuracy. Binary Particle Swarm Optimisation (BPSO) removed 80% of the inputs, revealing that three features alone predict criticality with>99% accuracy on a hold-out test set. SHAP analysis confirms the interpretability of the three-feature model. The predicted class and confidence score are pushed to a Sustainable Smart Waste Management (SSWM) app that alerts field teams and dynamically reorders maintenance queues. Compared with current practice, ProWaste can eliminate missed pickups while reducing on-road inspections and data bandwidth. The proposed architecture is readily transferable to other cities and can be extended to recycling or composting streams.
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