From hyperbolic in-plane anisotropy to an optical chirality: A new route to nanoscale circular polarizers

In recent years, van der Waals crystals have evolved from scientific curiosities into a versatile platform for exploring ...
IEEE

Cross-Spectral Analysis of Bivariate Graph Signals

Abstract: With the advancements in technology and monitoring tools, we often encounter multivariate graph signals, which can be seen as the realizations of multivariate graph processes, and revealing ...
IEEE

A New Family of Graph Representation Matrices: Application to Graph and Signal Classification

Abstract: Most natural matrices that incorporate information about a graph are the adjacency and the Laplacian matrices. These algebraic representations govern the fundamental concepts and tools in ...
GitHub

GAST: A Graph-Augmented Spectral–Spatial Transformer with Adaptive Gated Fusion for Small-Sample Hyperspectral Image Classification

A two-stage Optuna optimisation procedure tunes hyper-parameters for each scene, whilst a scene-adaptive loss choice (focal versus weighted cross-entropy) mitigates class imbalance. This figure ...