no code implementations • 23 Dec 2023 • Tomer Berg, Or Ordentlich, Ofer Shayevitz
The problem of statistical inference in its various forms has been the subject of decades-long extensive research.
no code implementations • 15 Feb 2022 • Elad Romanov, Tamir Bendory, Or Ordentlich
While our results are only proved for GMMs whose centers are uniformly distributed over the sphere, they hint that perhaps it is the decoding error probability associated with the center constellation as a channel code that determines the statistical difficulty of learning the corresponding GMM, rather than just the minimum distance.
no code implementations • 4 Oct 2021 • Elad Romanov, Or Ordentlich
Consider the rank-1 spiked model: $\bf{X}=\sqrt{\nu}\xi \bf{u}+ \bf{Z}$, where $\nu$ is the spike intensity, $\bf{u}\in\mathbb{S}^{k-1}$ is an unknown direction and $\xi\sim \mathcal{N}(0, 1),\bf{Z}\sim \mathcal{N}(\bf{0},\bf{I})$.
no code implementations • 19 Aug 2021 • Amir Weiss, Everest Huang, Or Ordentlich, Gregory W. Wornell
In a growing number of applications, there is a need to digitize signals whose spectral characteristics are challenging for traditional Analog-to-Digital Converters (ADCs).
1 code implementation • 16 Feb 2021 • Assaf Ben-Yishai, Or Ordentlich
For this method we prove that the multiclass regret is exactly a weighted sum of constituent binary regrets where the weighing is determined by the tree structure.
1 code implementation • 22 Jul 2020 • Elad Romanov, Tamir Bendory, Or Ordentlich
Multi-reference alignment entails estimating a signal in $\mathbb{R}^L$ from its circularly-shifted and noisy copies.