Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Conceptual diagram of NMF. (A) If the matrix with the observation vectors is 
, the matrix with the basis vectors is 
, and the matrix with the coupling coefficients 
as elements in k rows and n columns is 
, then X ≈ WH. (B) Convex cone spanned by w1 and w2. (C) Convex cone and subspace spanned by w1 and w2.
