Search Results for author: Charilaos I. Kanatsoulis

Found 12 papers, 4 papers with code

Network Alignment with Transferable Graph Autoencoders

1 code implementation5 Oct 2023 Jiashu He, Charilaos I. Kanatsoulis, Alejandro Ribeiro

Network alignment is the task of establishing one-to-one correspondences between the nodes of different graphs and finds a plethora of applications in high-impact domains.

Data Augmentation Transfer Learning

Transferability of Convolutional Neural Networks in Stationary Learning Tasks

1 code implementation21 Jul 2023 Damian Owerko, Charilaos I. Kanatsoulis, Jennifer Bondarchuk, Donald J. Bucci Jr, Alejandro Ribeiro

To accomplish this we investigate the properties of CNNs for tasks where the underlying signals are stationary.

Solving Large-scale Spatial Problems with Convolutional Neural Networks

no code implementations14 Jun 2023 Damian Owerko, Charilaos I. Kanatsoulis, Alejandro Ribeiro

Over the past decade, deep learning research has been accelerated by increasingly powerful hardware, which facilitated rapid growth in the model complexity and the amount of data ingested.

Transfer Learning

Multi-Target Tracking with Transferable Convolutional Neural Networks

1 code implementation27 Oct 2022 Damian Owerko, Charilaos I. Kanatsoulis, Jennifer Bondarchuk, Donald J. Bucci Jr, Alejandro Ribeiro

Multi-target tracking (MTT) is a classical signal processing task, where the goal is to estimate the states of an unknown number of moving targets from noisy sensor measurements.

Transfer Learning

Representation Power of Graph Neural Networks: Improved Expressivity via Algebraic Analysis

no code implementations19 May 2022 Charilaos I. Kanatsoulis, Alejandro Ribeiro

Despite the remarkable success of Graph Neural Networks (GNNs), the common belief is that their representation power is limited and that they are at most as expressive as the Weisfeiler-Lehman (WL) algorithm.

Graph Classification

Space-Time Graph Neural Networks

no code implementations ICLR 2022 Samar Hadou, Charilaos I. Kanatsoulis, Alejandro Ribeiro

We introduce a generic definition of convolution operators that mimic the diffusion process of signals over its underlying support.

GAGE: Geometry Preserving Attributed Graph Embeddings

no code implementations3 Nov 2020 Charilaos I. Kanatsoulis, Nicholas D. Sidiropoulos

Various real-world networks include information about both node connectivity and certain node attributes, in the form of features or time-series data.

Attribute Link Prediction +4

Generalized Canonical Correlation Analysis: A Subspace Intersection Approach

no code implementations25 Mar 2020 Mikael Sørensen, Charilaos I. Kanatsoulis, Nicholas D. Sidiropoulos

It is shown that from a linear algebra point of view, GCCA is tantamount to subspace intersection; and conditions under which the common subspace of the different views is identifiable are provided.

PREMA: Principled Tensor Data Recovery from Multiple Aggregated Views

2 code implementations26 Oct 2019 Faisal M. Almutairi, Charilaos I. Kanatsoulis, Nicholas D. Sidiropoulos

The goal of this paper is to reconstruct finer-scale data from multiple coarse views, aggregated over different (subsets of) dimensions.

Structured SUMCOR Multiview Canonical Correlation Analysis for Large-Scale Data

no code implementations24 Apr 2018 Charilaos I. Kanatsoulis, Xiao Fu, Nicholas D. Sidiropoulos, Mingyi Hong

In this work, we propose a new computational framework for large-scale SUMCOR GCCA that can easily incorporate a suite of structural regularizers which are frequently used in data analytics.

Hyperspectral Super-Resolution: A Coupled Tensor Factorization Approach

no code implementations15 Apr 2018 Charilaos I. Kanatsoulis, Xiao Fu, Nicholas D. Sidiropoulos, Wing-Kin Ma

Third, the majority of the existing methods assume that there are known (or easily estimated) degradation operators applied to the SRI to form the corresponding HSI and MSI--which is hardly the case in practice.

Super-Resolution

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