Title
Hierarchical Federated Learning based Anomaly Detection using Digital Twins for Smart Healthcare
Abstract
Internet of Medical Things (IoMT) is becoming ubiquitous with a proliferation of smart medical devices and applications used in smart hospitals, smart-home based care, and nursing homes. It utilizes smart medical devices and cloud computing services along with core Internet of Things (IoT) technologies to sense patients' vital body parameters, monitor health conditions and generate multivariate data to support just-in-time health services. Mostly, this large amount of data is analyzed in centralized servers. Anomaly Detection (AD) in a centralized healthcare ecosystem is often plagued by significant delays in response time with high performance overhead. Moreover, there are inherent privacy issues associated with sending patients' personal health data to a centralized server, which may also introduce several security threats to the AD model, such as possibility of data poisoning. To overcome these issues with centralized AD models, here we propose a Federated Learning (FL) based AD model which utilizes edge cloudlets to run AD models locally without sharing patients' data. Since existing FL approaches perform aggregation on a single server which restricts the scope of FL, in this paper, we introduce a hierarchical FL that allows aggregation at different levels enabling multi-party collaboration. We introduce a novel disease-based grouping mechanism where different AD models are grouped based on specific types of diseases. Furthermore, we develop a new Federated Time Distributed (FEDTIMEDIS) Long Short-Term Memory (LSTM) approach to train the AD model. We present a Remote Patient Monitoring (RPM) use case to demonstrate our model, and illustrate a proof-of-concept implementation using Digital Twin (DT) and edge cloudlets.
Year
DOI
Venue
2021
10.1109/CIC52973.2021.00013
2021 IEEE 7th International Conference on Collaboration and Internet Computing (CIC)
Keywords
DocType
ISBN
Federated Learning,Anomaly Detection,Internet of Medical Things,Remote Patient Monitoring,Security,Privacy,Edge Cloudlet Computing,Long Short-Term Memory,Digital Twin
Conference
978-1-6654-1626-9
Citations 
PageRank 
References 
1
0.35
0
Authors
5
Name
Order
Citations
PageRank
Deepti Gupta121.71
Olumide Kayode211.37
Smriti Bhatt310.35
Maanak Gupta432.10
Ali Saman Tosun514418.94