Search Results for author: Paris Giampouras

Found 5 papers, 0 papers with code

Clustering-based Domain-Incremental Learning

no code implementations21 Sep 2023 Christiaan Lamers, Rene Vidal, Nabil Belbachir, Niki van Stein, Thomas Baeck, Paris Giampouras

A key challenge in this setting is the so-called "catastrophic forgetting problem", in which the performance of the learner in an "old task" decreases when subsequently trained on a "new task".

Clustering Continual Learning +2

A Linearly Convergent GAN Inversion-based Algorithm for Reverse Engineering of Deceptions

no code implementations7 Jun 2023 Darshan Thaker, Paris Giampouras, René Vidal

In this paper, we build on prior work and propose a novel framework for reverse engineering of deceptions which supposes that the clean data lies in the range of a GAN.

valid

Reverse Engineering $\ell_p$ attacks: A block-sparse optimization approach with recovery guarantees

no code implementations9 Mar 2022 Darshan Thaker, Paris Giampouras, René Vidal

We pose this problem as a block-sparse recovery problem, where both the signal and the attack are assumed to lie in a union of subspaces that includes one subspace per class and one subspace per attack type.

Implicit Bias of Projected Subgradient Method Gives Provable Robust Recovery of Subspaces of Unknown Codimension

no code implementations ICLR 2022 Paris Giampouras, Benjamin David Haeffele, Rene Vidal

In particular, we show that 1) all of the problem instances will converge to a vector in the null space of the subspace and 2) the ensemble of problem instance solutions will be sufficiently diverse to fully span the null space of the subspace (and thus reveal the true codimension of the subspace) even when the true subspace dimension is unknown.

Representation Learning

Simultaneously sparse and low-rank abundance matrix estimation for hyperspectral image unmixing

no code implementations7 Apr 2015 Paris Giampouras, Konstantinos Themelis, Athanasios Rontogiannis, Konstantinos Koutroumbas

In a plethora of applications dealing with inverse problems, e. g. in image processing, social networks, compressive sensing, biological data processing etc., the signal of interest is known to be structured in several ways at the same time.

Compressive Sensing

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