3 papers
math.NA2025
Fast capacity computation for maze-like configurations
Harri Hakula, Oona Rainio, Matti Vuorinen
We study the conformal capacity where is a bounded domain of and is a compact connected set in . Because the exact numerical value of…
math.MG2025
Visual angle metric in the upper half plane
Masayo Fujimura, Oona Rainio, Matti Vuorinen
We prove an identity which connects the visual angle metric and the hyperbolic metric of the upper half plane . The proof is ba…
stat.AP2025
Quantitative evaluation of unsupervised clustering algorithms for dynamic total-body PET image analysis
Oona Rainio, Maria K. Jaakkola, Riku Klén
Background. Recently, dynamic total-body positron emission tomography (PET) imaging has become possible due to new scanner devices. While clustering algorithms have been proposed f…