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  4. Decentralized Federated Learning for Epileptic Seizures Detection in Low-Power Wearable Systems
 
research article

Decentralized Federated Learning for Epileptic Seizures Detection in Low-Power Wearable Systems

Baghersalimi, Saleh  
•
Teijeiro, Tomas  
•
Aminifar, Amir  
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2023
IEEE Transactions on Mobile Computing

In healthcare, data privacy of patients regulations prohibits data from being moved outside the hospital, preventing international medical datasets from being centralized for AI training. Federated learning (FL) is a data privacy-focused method that trains a global model by aggregating local models from hospitals. Existing FL techniques adopt a central server- based network topology, where the server assembles the local models trained in each hospital to create a global model. However, the server could be a point of failure, and models trained in FL usually have worse performance than those trained in the centralized learning manner when the patient’s data are not in- dependent and identically distributed (Non-IID) in the hospitals. This paper presents a decentralized FL framework, including training with adaptive ensemble learning and a deployment phase using knowledge distillation. The adaptive ensemble learning step in the training phase leads to the acquisition of a specific model for each hospital that is the optimal combination of local models and models from other available hospitals. This step solves the non-IID challenges in each hospital. The deployment phase adjusts the model’s complexity to meet the resource constraints of wearable systems. We evaluated the performance of our approach on edge computing platforms using EPILEPSIAE and TUSZ databases, which are public epilepsy datasets.

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Decentralized_Federated_Learning_IEEE_Transactions_on_Mobile_Computing.pdf

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