The Riccati equation plays as important a role in scattering theory as it does in linear least squares estimation theory. However, in the scattering literature, a somewhat different framework of ...

Researchers at EPFL have created a mathematical model that helps explain how breaking language into sequences makes modern AI ...

The goal of the sparse approximation problem is to approximate a target signal using a linear combination of a few elementary signals drawn from a fixed collection. This paper surveys the major ...

Its root word, “problem,” would have mystified King Alfred. The closest Old English equivalent was a homely word that looked kind of like a cough: “ þearf.” ...