7162
An objective function is defined to impose lo-calization constraint , in addition to the non-negativity constraint in the standard NMF -LSB- 1 -RSB- .
 used for: objective function, lo-calization constraint; part of: non-negativity constraint, NMF
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:  objective function, lo-calization constraint; non-negativity constraint, NMF 
Answer:
 used for: objective function, lo-calization constraint; part of: non-negativity constraint, NMF