Work

Unsupervised domain transfer: overcoming signal degradation in sleep monitoring by increasing scoring realism

Year: 2026

Type: article

Abstract: . Investigate whether hypnogram 'realism' can be used to guide an unsupervised method for handling arbitrary types of signal degradation in mobile sleep monitoring.. Combining a pretrained, state-of-the-art U-sleep model with a 'discriminator' network, we align features from a target domain with a feature space learned during pretraining. To test the approach, we distort the source domain with realistic signal degradations, investigating how well the method can adapt to different types of degradation. We compare the performance of the resulting model with best-case models designed in a supervised manner for each type of transfer.. Depending on the type of distortion, we find that the unsupervised approach can increase Cohen's kappa with as little as 0.03 and up to 0.29, and that for all transfers, the method does not decrease performance. However, the approach never quite reaches the estimated theoretical optimal performance, and when tested on a real-life domain mismatch between two sleep studies, the benefit was insignificant.. 'Discriminator-guided fine-tuning' is an interesting approach to handling signal degradation for 'in the wild' sleep monitoring, with some promise. In particular, what it says about sleep data in general is interesting. However, more development will be necessary before using it in production. Index terms: transfer learning, sleep scoring, deep learning, adversarial learning.

Source: Journal of Neural Engineering

DOI: 10.1088/1741-2552/ae9f96

Authors: Mohammad Ahangarkiasari, Andreas Tind Damgaard, Casper Haurum, Kaare B Mikkelsen

Institution: Aarhus University

Language: English

Topic: Domain Adaptation and Few-Shot Learning

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

Funder: Danish e-Infrastructure Cooperation