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When classifying high-dimensional sequence data , traditional methods -LRB- e.g. , HMMs , CRFs -RRB- may require large amounts of training data to avoid overfitting .
 used for: HMMs, classifying high-dimensional sequence data; conjunction: HMMs, CRFs; used for: CRFs, classifying high-dimensional sequence data
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:  HMMs, classifying high-dimensional sequence data; HMMs, CRFs; CRFs, classifying high-dimensional sequence data 
Answer:
 used for: HMMs, classifying high-dimensional sequence data; conjunction: HMMs, CRFs; used for: CRFs, classifying high-dimensional sequence data