A fast two-stage algorithm for non-negative matrix factorization in streaming data

no code implementations • 21 Jan 2021 • Ran Gu, Qiang Du, Simon J. L. Billinge

In the second stage, an interior point method is adopted to accelerate the local convergence.

Optimization and Control Numerical Analysis Numerical Analysis 65K10, 90C26 G.1.6; F.2.1

Validation of non-negative matrix factorization for assessment of atomic pair-distribution function (PDF) data in a real-time streaming context

1 code implementation • 22 Oct 2020 • Chia-Hao Liu, Christopher J. Wright, Ran Gu, Sasaank Bandi, Allison Wustrow, Paul K. Todd, Daniel O'Nolan, Michelle L. Beauvais, James R. Neilson, Peter J. Chupas, Karena W. Chapman, Simon J. L. Billinge

We validate the use of matrix factorization for the automatic identification of relevant components from atomic pair distribution function (PDF) data.