We comment that there are several NMF algorithms which use the ANLS approach.
Numerical experiments in [6, 14, 15] show that the HALS/RRI algorithm is significantly faster than the Lee-Seung method and some other methods based on ANLS approach.
In this paper, motivated by the success of Lin's projected gradient method and good performance of the Barzilai-Borwein method for optimization, we propose four projected Barzilai-Borwein algorithms within the ANLS framework for the nsNMF problem 1.2.
He is an internationally recognised instructor trainer for basic life support (BLS), advanced cardiovascular life support (ACLS), paediatric advanced life support (PALS), advanced paediatric life support (APLS UK), advanced neonatal life support (ANLS
), and advanced medical life support (AMLS), and is co-author of over 60 international publications relating to resuscitation and emergency cardiovascular care.