IEEE

Quaternion Non-Negative Matrix Factorization: Definition, Uniqueness, and Algorithm

Abstract: This article introduces quaternion non-negative matrix factorization (QNMF), which generalizes the usual non-negative matrix factorization (NMF) to the case of polarized signals.
Imperial College London

One- and two-dimensional factorization structures on the Hilbert scheme of points of a surface

Nakajima and Grojnowski have shown that the cohomology H of Hilb(X) is naturally a representation of the Heisenberg Lie algebra modelled on the cohomology of X, and is isomorphic as a representation ...
IEEE

The Stability and Continuity Behavior of the Spectral Factorization in the Wiener Algebra ...

Abstract: This paper investigates the stability and the continuity behavior of the spectral factorization and of the Wiener filter in the bounded-input bounded-output (BIBO) stability norm. It shows ...