6704
Experimental results are presented to compare LNMF with the NMF and PCA methods for face representation and recognition , which demonstrates advantages of LNMF .
 LNMF, NMF and PCA methods; LNMF, face representation and recognition; NMF and PCA methods, face representation and recognition; face representation and recognition, LNMF
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 LNMF, NMF and PCA methods; LNMF, face representation and recognition; NMF and PCA methods, face representation and recognition; face representation and recognition, LNMF