Non-negative Matrix Factorization of Gamma-ray Spectra for Background Modeling, Detection, and Source Identification

Radiological source search is a challenge involving the detection, identification, and localization of weak sources within background environments that vary both spatially and temporally. In this paper, a method for simultaneously detecting and identifying gamma-ray sources using background models formed from spectral data is described. Non-negative matrix factorization (NMF) is used to generate l...