Search Results for author: Or Ordentlich

Found 6 papers, 2 papers with code

Statistical Inference with Limited Memory: A Survey

no code implementations23 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.

On the Role of Channel Capacity in Learning Gaussian Mixture Models

no code implementations15 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.

Spiked Covariance Estimation from Modulo-Reduced Measurements

no code implementations4 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 $\xi\sim \mathcal{N}(0, 1),\bf{Z}\sim \mathcal{N}(\bf{0},\bf{I})$.

Blind Modulo Analog-to-Digital Conversion

no code implementations19 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).

Constructing Multiclass Classifiers using Binary Classifiers Under Log-Loss

1 code implementation16 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.

Classification

Multi-reference alignment in high dimensions: sample complexity and phase transition

1 code implementation22 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.

Vocal Bursts Intensity Prediction

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