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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 .
 HMMs, classifying high-dimensional sequence data; HMMs, CRFs; CRFs, classifying high-dimensional sequence data
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 HMMs, classifying high-dimensional sequence data; HMMs, CRFs; CRFs, classifying high-dimensional sequence data