Detecting Difference between Process Models Based on the Refined Process Structure Tree

Algorithm 4

Check TPST.

Input: TPSTNode root_tpst

Output: TPSTNode root_tpst

for each route node in level-order by visiting root_tpst do

 if Children.size == 1 and type == Sequence then

  children = Children;

  parent = Parent;

(5)   parent.child.remove;

(6)   parent.child.add(children);

(7)  end

(8) end

(9) return root_tpst;