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Experimental results are presented to compare LNMF with the NMF and PCA methods for face representation and recognition , which demonstrates advantages of LNMF .
 compare: LNMF, NMF and PCA methods; used for: LNMF, face representation and recognition; used for: NMF and PCA methods, face representation and recognition; evaluate for: face representation and recognition, LNMF
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  LNMF, NMF and PCA methods; LNMF, face representation and recognition; NMF and PCA methods, face representation and recognition; face representation and recognition, LNMF 
Answer:
 compare: LNMF, NMF and PCA methods; used for: LNMF, face representation and recognition; used for: NMF and PCA methods, face representation and recognition; evaluate for: face representation and recognition, LNMF