The elimination of inference channel based on rough set theory

This paper addresses inference channel problem based on rough set theory. The data database is processed by the method of attribute and attribute value reduction in rough set theory. Besides, based on attribute value reduction, a new algorithm is proposed for finding inference rules in database. Further, the security level of condition attributes which has high attribute frequency is increased to the security level of decision attributes in inference rule and the inference channel could be eliminated. Finally the result of our experiment shows that the algorithm of eliminating inference channel is efficient and feasible.