In the information and data explosion era,redundant rules problem has become a major obstacle to gain knowledge for data miners,but the current solution may lead to the incompleteness of association rules.For the issues above,introduce the directed hypergraph to express association rules,redefine the adjacency matrix,propose the categorical thinking for removing redundant rules,dividing redundant rules into slave rules and repeated-path-rules,the algorithm of removing the dependency rule by VB programming a...