Search Results for author: Zeljko Kereta

Found 6 papers, 1 papers with code

StreaMRAK a Streaming Multi-Resolution Adaptive Kernel Algorithm

no code implementations23 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.

Unsupervised Knowledge-Transfer for Learned Image Reconstruction

no code implementations6 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.

Image Reconstruction SSIM +1

Estimating covariance and precision matrices along subspaces

no code implementations26 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.

Dimensionality Reduction

Computational approaches to non-convex, sparsity-inducing multi-penalty regularization

no code implementations7 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

Nonlinear generalization of the monotone single index model

1 code implementation24 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.

regression

Cannot find the paper you are looking for? You can Submit a new open access paper.