8754
Just as factor analysis can be viewed as unsupervised linear regression on unobserved , normally distributed hidden variables , product analysis can be viewed as unsupervised linear regression on products of unobserved , normally distributed hidden variables .
 used for: unsupervised linear regression, factor analysis; used for: unsupervised linear regression, product analysis
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:  unsupervised linear regression, factor analysis; unsupervised linear regression, product analysis 
Answer:
 used for: unsupervised linear regression, factor analysis; used for: unsupervised linear regression, product analysis