DCentNet: Decentralized Multistage Biomedical Signal Classification using Early Exits

• URL: http://arxiv.org/abs/2502.17446v1
• Date: Fri, 31 Jan 2025 04:24:39 GMT
• Title: DCentNet: Decentralized Multistage Biomedical Signal Classification using Early Exits
• Authors: Xiaolin Li, Binhua Huang, Barry Cardiff, Deepu John,
• Abstract summary: DCentNet partitions a single CNN model into multiple sub-networks using EEPs.<n>EEPs compress large feature maps before transmission, significantly reducing wireless data transfer and power usage.<n>A genetic algorithm is used to optimize EEP placement, balancing performance and complexity.
• Score: 4.44410626000765
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: DCentNet is a novel decentralized multistage signal classification approach designed for biomedical data from IoT wearable sensors, integrating early exit points (EEP) to enhance energy efficiency and processing speed. Unlike traditional centralized processing methods, which result in high energy consumption and latency, DCentNet partitions a single CNN model into multiple sub-networks using EEPs. By introducing encoder-decoder pairs at EEPs, the system compresses large feature maps before transmission, significantly reducing wireless data transfer and power usage. If an input is confidently classified at an EEP, processing stops early, optimizing efficiency. Initial sub-networks can be deployed on fog or edge devices to further minimize energy consumption. A genetic algorithm is used to optimize EEP placement, balancing performance and complexity. Experimental results on ECG classification show that with one EEP, DCentNet reduces wireless data transmission by 94.54% and complexity by 21%, while maintaining original accuracy and sensitivity. With two EEPs, sensitivity reaches 98.36%, accuracy 97.74%, wireless data transmission decreases by 91.86%, and complexity is reduced by 22%. Implemented on an ARM Cortex-M4 MCU, DCentNet achieves an average power saving of 73.6% compared to continuous wireless ECG transmission.

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