Table 4: Algorithm performances in terms of recall and precision when applied to ORL with factor ranks 𝑟 = 20 and 𝑟 = 80.

           𝑟 = 2 0
Method 𝑇 𝑃 𝐹 𝑃 R e c a l l P r e c i s i o n F-measure

NMF 80 0 1 1 1
LNMF 80 0 1 1 1
NMFsc 80 0 1 1 1
DLPP 40 40 0.5 0.5 0.5

           𝑟 = 8 0
Method 𝑇 𝑃 𝐹 𝑃 R e c a l l P r e c i s i o n F-measure

NMF 80 0 1 1 1
LNMF 80 0 1 1 1
NMFsc 80 0 1 1 1
DLPP 41 39 0.51 0.51 0.51