Abstract: To improve mining accuracy of workflow models,a new algorithm for mining workflow frectuent pattern was proposed. Firstly,the Workflow Model depend Matrix (WM) was defined,and set up WM by using workflow logs. Secondly, using the depend relation of activities as frequent itemsets, an alogrithm was designed to automatically generate frequent itemsets based on WM. Finally, got the workflow frectuent pattern by disposing frequent itemsets. The algorithm has advantage in disposing the interleaving relations between activities and workflow models with the serial or parallel relations.

Key words: Workflow model,Matrix,Frequent pattern mining