Optimising complexity of CNN models for resource constrained devices: QRS detection case study

• URL: http://arxiv.org/abs/2301.09232v1
• Date: Mon, 23 Jan 2023 00:22:37 GMT
• Title: Optimising complexity of CNN models for resource constrained devices: QRS detection case study
• Authors: Ahsan Habib, Chandan Karmakar and John Yearwood
• Abstract summary: We propose a shallow CNN model to offer satisfactory level of performance in combination with post-processing. In an IoMT application context, QRS-detection and R-peak localisation from ECG signal as a case study, the complexities of CNN models and post-processing were varied. To the best of our knowledge, finding a deploy-able configuration, by incrementally increasing the CNN model complexity, and leveraging the strength of post-processing, is the first of its kind.
• Score: 1.6822770693792823
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Traditional DL models are complex and resource hungry and thus, care needs to be taken in designing Internet of (medical) things (IoT, or IoMT) applications balancing efficiency-complexity trade-off. Recent IoT solutions tend to avoid using deep-learning methods due to such complexities, and rather classical filter-based methods are commonly used. We hypothesize that a shallow CNN model can offer satisfactory level of performance in combination by leveraging other essential solution-components, such as post-processing that is suitable for resource constrained environment. In an IoMT application context, QRS-detection and R-peak localisation from ECG signal as a case study, the complexities of CNN models and post-processing were varied to identify a set of combinations suitable for a range of target resource-limited environments. To the best of our knowledge, finding a deploy-able configuration, by incrementally increasing the CNN model complexity, as required to match the target's resource capacity, and leveraging the strength of post-processing, is the first of its kind. The results show that a shallow 2-layer CNN with a suitable post-processing can achieve $>$90\% F1-score, and the scores continue to improving for 8-32 layer CNNs, which can be used to profile target constraint environment. The outcome shows that it is possible to design an optimal DL solution with known target performance characteristics and resource (computing capacity, and memory) constraints.

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