no code implementations • 23 Aug 2021 • Andreas Oslandsbotn, Zeljko Kereta, Valeriya Naumova, Yoav Freund, Alexander Cloninger
With a novel sub-sampling scheme, StreaMRAK reduces memory and computational complexities by creating a sketch of the original data, where the sub-sampling density is adapted to the bandwidth of the kernel and the local dimensionality of the data.
no code implementations • 6 Jul 2021 • Riccardo Barbano, Zeljko Kereta, Andreas Hauptmann, Simon R. Arridge, Bangti Jin
Deep learning-based image reconstruction approaches have demonstrated impressive empirical performance in many imaging modalities.
no code implementations • 26 Sep 2019 • Zeljko Kereta, Timo Klock
We also show that estimation of precision matrices is almost independent of the condition number of the covariance matrix.
no code implementations • 7 Aug 2019 • Zeljko Kereta, Johannes Maly, Valeriya Naumova
In this work we consider numerical efficiency and convergence rates for solvers of non-convex multi-penalty formulations when reconstructing sparse signals from noisy linear measurements.
Information Theory Information Theory
1 code implementation • 24 Feb 2019 • Zeljko Kereta, Timo Klock, Valeriya Naumova
This paper deals with a nonlinear generalization of this framework to allow for a regressor that uses multiple index vectors, adapting to local changes in the responses.
no code implementations • 23 Sep 2018 • Ernesto de Vito, Zeljko Kereta, Valeria Naumova
Our analysis combines statistical learning theory with insights from regularisation theory.