Biomarkers Cognitive ability Cognitive impairment Deep learning Digital biomarker Digital measure Eigenvalues and eigenfunctions Errors Forecasting Home monitoring Infrared detectors Learning algorithms Location Long-term continuous monitoring Machine learning algorithms Matrix algebra Mild cognitive impairment Older adults Reconstruction error Support vector machines Ubiquitous computing biomarkers cognitive ability dementia digital biomarkers digital measures high-grade serous ovarian cancer home monitoring imaging mass spectrometry