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Training and decoding with the model requires summing over an exponential number of hidden-variable assignments : the required summations can be computed efficiently and exactly using dynamic programming .
 used for: dynamic programming, summations
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:  dynamic programming, summations 
Answer:
 used for: dynamic programming, summations