Two Efficient Algorithms for Orthogonal Nonnegative Matrix Factorization

Figure 2

Recovered cat by Algorithms 1–3, and Algorithm 4. (a) J = 5. (b) J = 5. (c) J = 5. (d) J = 5. (e) J = 15. (f) J = 15. (g) J = 15. (h) J = 15. (i) J = 30. (j) J = 30. (k) J = 30. (l) J = 30.

(a)

(b)

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(e)

(f)

(g)

(h)

(i)

(j)

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(l)