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Search: authors:"Tuomo Valkonen"

3 papers found.
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Acceleration of the PDHGM on Partially Strongly Convex Functions

give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Tuomo Valkonen received his Ph.D. from the University

Stability of Saddle Points Via Explicit Coderivatives of Pointwise Subdifferentials

We derive stability criteria for saddle points of a class of nonsmooth optimization problems in Hilbert spaces arising in PDE-constrained optimization, using metric regularity of infinite-dimensional set-valued mappings. A main ingredient is an explicit pointwise characterization of the regular coderivative of the subdifferential of convex integral functionals. This is applied to ...

Diffusion Tensor Imaging with Deterministic Error Bounds

optical coatings. Tuomo Valkonen received his Ph.D. from the University of Jyväskylä in 2008. Since then he has been in Graz, Cambridge, and Quito. In February 2016 he started as a lecturer at the