The Hierarchical Delta Debugging 卤囟白囟 卣百卤白白白 HDD: view the input as a hierarchical tree structure, reduce subtrees from top down(Misherghi and Su ICSE 2006) C program for compiler, xml/html for web serversThe Hierarchical Delta Debugging 12 12 HDD: view the input as a hierarchical tree structure, reduce subtrees from top down (Misherghi and Su @ ICSE 2006) C program for compiler, xml/html for web servers