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Unlike previous studies that focus on user 's knowledge or typical kinds of users , the user model we propose is more comprehensive .
 compare: studies, user model
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:  studies, user model 
Answer:
 compare: studies, user model