Search Results for author: Konstantin Usevich

Found 9 papers, 1 papers with code

Coupled CP tensor decomposition with shared and distinct components for multi-task fMRI data fusion

no code implementations25 Nov 2022 Ricardo Augusto Borsoi, Isabell Lehmann, Mohammad Abu Baker Siddique Akhonda, Vince Calhoun, Konstantin Usevich, David Brie, Tülay Adalı

Discovering components that are shared in multiple datasets, next to dataset-specific features, has great potential for studying the relationships between different subjects or tasks in functional Magnetic Resonance Imaging (fMRI) data.

Tensor Decomposition

Polarimetric phase retrieval: uniqueness and algorithms

no code implementations26 Jun 2022 Julien Flamant, Konstantin Usevich, Marianne Clausel, David Brie

This work introduces a novel Fourier phase retrieval model, called polarimetric phase retrieval that enables a systematic use of polarization information in Fourier phase retrieval problems.

Retrieval

Hankel low-rank approximation and completion in time series analysis and forecasting: a brief review

no code implementations10 Jun 2022 Jonathan Gillard, Konstantin Usevich

In this paper we offer a review and bibliography of work on Hankel low-rank approximation and completion, with particular emphasis on how this methodology can be used for time series analysis and forecasting.

Time Series Time Series Analysis

Low-rank tensor recovery for Jacobian-based Volterra identification of parallel Wiener-Hammerstein systems

no code implementations20 Sep 2021 Konstantin Usevich, Philippe Dreesen, Mariya Ishteva

We consider the problem of identifying a parallel Wiener-Hammerstein structure from Volterra kernels.

Tensor-based framework for training flexible neural networks

no code implementations25 Jun 2021 Yassine Zniyed, Konstantin Usevich, Sebastian Miron, David Brie

Activation functions (AFs) are an important part of the design of neural networks (NNs), and their choice plays a predominant role in the performance of a NN.

Structured low-rank matrix completion for forecasting in time series analysis

no code implementations22 Feb 2018 Jonathan Gillard, Konstantin Usevich

In this paper we consider the low-rank matrix completion problem with specific application to forecasting in time series analysis.

Low-Rank Matrix Completion Time Series +1

Identifiability of an X-rank decomposition of polynomial maps

no code implementations4 Mar 2016 Pierre Comon, Yang Qi, Konstantin Usevich

In this paper, we study a polynomial decomposition model that arises in problems of system identification, signal processing and machine learning.

BIG-bench Machine Learning

Adjusted least squares fitting of algebraic hypersurfaces

1 code implementation6 Dec 2014 Konstantin Usevich, Ivan Markovsky

In this paper, we present new results on invariance properties of the adjusted least squares estimator and an improved algorithm for computing the estimator for an arbitrary set of monomials in the polynomial equation.

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