A Symmetric Rank-One Quasi-Newton Method for Nonnegative Matrix Factorization

Figure 5

Relative errors of approximation against time for SR1 and fnmae with the matrix 𝑉∈ℝ^200×40 in (a) and 𝑉∈ℝ^2000×800 in (b) for the approximate rank 𝑘=10.

(a)

(b)