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All three ideas are implemented in a unified active and semi-supervised regression framework with ability to perform transfer learning , by exploiting the underlying geometric structure of crowd patterns via manifold analysis .
 used for: unified active and semi-supervised regression framework, transfer learning; used for: geometric structure of crowd patterns, unified active and semi-supervised regression framework; used for: manifold analysis, geometric structure of crowd patterns
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:  unified active and semi-supervised regression framework, transfer learning; geometric structure of crowd patterns, unified active and semi-supervised regression framework; manifold analysis, geometric structure of crowd patterns 
Answer:
 used for: unified active and semi-supervised regression framework, transfer learning; used for: geometric structure of crowd patterns, unified active and semi-supervised regression framework; used for: manifold analysis, geometric structure of crowd patterns