Firstly the concept of support function is introduced. Then an incremental updating model is presented, which contains the construction of IFP-tree and IFP-tree growth algorithm.

• 该文在FP树的基础上 ；引入支持度函数的概念 ；对FP树进行改造 ；提出了一种关于挖掘关联规则的增量更新算法IFP growth .