Two Efficient Algorithms for Orthogonal Nonnegative Matrix Factorization

Table 5

Comparison of cpu time (seconds) testing on image panda.

Rank J	Algorithm 1	Algorithm 2	Algorithm 3	Algorithm 4
10	93.1131 ± 5.2421	427.2460 ± 10.8541	87.0101 ± 6.0105
20	96.2495 ± 4.2680	470.1573 ± 15.9630	98.3510 ± 8.1507
40	99.1576 ± 8.0485	526.0207 ± 18.0012	105.1883 ± 9.2057
60	101.6872 ± 10.5701	579.2561 ± 23.2007	112.1097 ± 10.0005
80	104.0500 ± 9.4910	819.0018 ± 30.0804	120.2542 ± 13.5076