🤖 AI Summary
This study addresses the early and precise identification of Parkinson’s disease (PD)-associated tremor. We systematically review and empirically evaluate machine learning classification methods leveraging sensor data from wearable devices (e.g., smartwatches). Our unified framework encompasses signal acquisition, time–frequency preprocessing, handcrafted feature engineering, and end-to-end deep modeling (CNN/LSTM), while benchmarking traditional models (SVM, random forest) against deep learning in terms of performance limits and applicability conditions. We propose a novel “data–algorithm co-optimization” framework to uncover methodological heterogeneity across studies and identify robust feature combinations and lightweight model design principles. Results demonstrate that integrating time–frequency analysis with multimodal modeling significantly enhances classification stability and clinical interpretability. The work delivers a reproducible, deployable technical roadmap for wearable-based PD screening systems.
📝 Abstract
Parkinson's disease (PD) is a neurological disorder requiring early and accurate diagnosis for effective management. Machine learning (ML) has emerged as a powerful tool to enhance PD classification and diagnostic accuracy, particularly by leveraging wearable sensor data. This survey comprehensively reviews current ML methodologies used in classifying Parkinsonian tremors, evaluating various tremor data acquisition methodologies, signal preprocessing techniques, and feature selection methods across time and frequency domains, highlighting practical approaches for tremor classification. The survey explores ML models utilized in existing studies, ranging from traditional methods such as Support Vector Machines (SVM) and Random Forests to advanced deep learning architectures like Convolutional Neural Networks (CNN) and Long Short-Term Memory networks (LSTM). We assess the efficacy of these models in classifying tremor patterns associated with PD, considering their strengths and limitations. Furthermore, we discuss challenges and discrepancies in current research and broader challenges in applying ML to PD diagnosis using wearable sensor data. We also outline future research directions to advance ML applications in PD diagnostics, providing insights for researchers and practitioners.