Two Efficient Algorithms for Orthogonal Nonnegative Matrix Factorization

Table 2

Comparison of REE testing on image cat.

Rank J	Algorithm 1	Algorithm 2	Algorithm 3	Algorithm 4
5	0.1906 ± 0.0314		0.1957 ± 0.0241	0.1947 ± 0.0264
10	0.1761 ± 0.0245		0.1740 ± 0.0211	0.1711 ± 0.0216
15	0.1659 ± 0.0174	0.1513 ± 0.0152	0.1601 ± 0.0187	0.1473 ± 0.0182
20	0.1584 ± 0.0112		0.1474 ± 0.0158	0.1384 ± 0.0155
25	0.1521 ± 0.0121	0.1252 ± 0.0102	0.1392 ± 0.0129
30	0.1477 ± 0.0189	0.1175 ± 0.0093	0.1292 ± 0.0111