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q-bio.QM2026
Exploiting chemical shift variability enables recovery of overlapping metabolites from 1H nuclear magnetic resonance spectra
Jesper Løve Hinrich, Pia Susan Mayer, Bekzod Khakimov +2
Overlapping peaks and sample-dependent chemical shift variability prevent reliable metabolite recovery from complex biological spectra. This problem is critical in one-dimensional…
cs.LG2026
Shift- and stretch-invariant non-negative matrix factorization with an application to brain tissue delineation in emission tomography data
Anders S. Olsen, Miriam L. Navarro, Claus Svarer +3
Dynamic neuroimaging data, such as emission tomography measurements of radiotracer transport in blood or cerebrospinal fluid, often exhibit diffusion-like properties. These introdu…