40 citations · 115 across the 23 of their papers we have counts for
27 papers
The --regression for compositional data: a unified framework for standard, temporal and spatial regression models including compositional predictors
Michail Tsagris, Nader Alharbi, Abdulaziz Alenazi +1
We revisit the --regression framework for compositional data. We formulate --regression as a non--linear least squares problem, study its asymptotic properties, and provide e…
Measuring the Substructure Mass Power Spectrum of 23 SLACS Strong Galaxy-Galaxy Lenses with Convolutional Neural Networks
Joshua Fagin, Georgios Vernardos, Grigorios Tsagkatakis +3
Strong gravitational lensing can be used as a tool for constraining the substructure in the mass distribution of galaxies. In this study we investigate the power spectrum of dark m…
Cauchy robust principal component analysis with applications to high-deimensional data sets
Ayisha Fayomi, Yannis Pantazis, Michail Tsagris +1
Principal component analysis (PCA) is a standard dimensionality reduction technique used in various research and applied fields. From an algorithmic point of view, classical PCA ca…
Lipschitz-regularized gradient flows and generative particle algorithms for high-dimensional scarce data
Hyemin Gu, Panagiota Birmpa, Yannis Pantazis +2
We build a new class of generative algorithms capable of efficiently learning an arbitrary target distribution from possibly scarce, high-dimensional data and subsequently generate…
Function-space regularized Rényi divergences
Jeremiah Birrell, Yannis Pantazis, Paul Dupuis +2
We propose a new family of regularized Rényi divergences parametrized not only by the order but also by a variational function space. These new objects are defined by taking th…
Forward Looking Best-Response Multiplicative Weights Update Methods for Bilinear Zero-sum Games
Michail Fasoulakis, Evangelos Markakis, Yannis Pantazis +1
Our work focuses on extra gradient learning algorithms for finding Nash equilibria in bilinear zero-sum games. The proposed method, which can be formally considered as a variant of…