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• W4316662968 abstract "The bold vision of AI-driven pervasive physiological monitoring, through the proliferation of off-the-shelf wearables that began a decade ago, has created immense opportunities to extract actionable information for precision medicine. These AI algorithms model the input-output relationships of a system that, in many cases, exhibits complex nature and personalization requirements. A particular example is cuffless blood pressure estimation using wearable bioimpedance. However, these algorithms need to be trained with a significant amount of ground truth data. In the context of biomedical applications, collecting ground truth data, particularly at the personalized level is challenging, burdensome, and in some cases infeasible. Our objective is to establish physics-informed neural network (PINN) models for physiological time series data that would reduce reliance on ground truth information. We achieve this by building Taylor's approximation for the gradually changing known cardiovascular relationships between input and output (e.g., sensor measurements to blood pressure) and incorporating this approximation into our proposed neural network training. The effectiveness of the framework is demonstrated through a case study: continuous cuffless BP estimation from time series bioimpedance data. We show that by using PINNs over the state-of-the-art time series regression models tested on the same datasets, we retain a high correlation (systolic: 0.90, diastolic: 0.89) and low error (systolic: 1.3 ± 7.6 mmHg, diastolic: 0.6 ± 6.4 mmHg) while reducing the amount of ground truth training data on average by a factor of 15. This could be helpful in developing future AI algorithms to help interpret pervasive physiologic data using minimal amount of training data." @default.
• W4316662968 created "2023-01-17" @default.
• W4316662968 creator A5011769350 @default.
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• W4316662968 date "2023-01-16" @default.
• W4316662968 modified "2023-09-24" @default.
• W4316662968 title "Physics-Informed Neural Networks for Modeling Physiological Time Series: A Case Study with Continuous Blood Pressure" @default.
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• W4316662968 doi "https://doi.org/10.21203/rs.3.rs-2423200/v1" @default.
• W4316662968 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36711741" @default.
• W4316662968 hasPublicationYear "2023" @default.
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