在实际的挖掘过程中需要有效地利用约束条件来提高挖掘效率。
Utilize constraints can increase mining efficiency in the process of actual data mining.
实验结果表明：新的算法提高了挖掘效率，删除了许多无意义的模式。
The results show that the new algorithm improves greatly mining efficiency and deletes a lot of meaningless patterns.
MDRBR算法通过规则支持度进行约束，可有效提高缺省规则的挖掘效率。
MDRBR algorithm improves efficiency of existing algorithms for mining default rules with support measure constraint.
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