Extended Rough Sets Approach to Analysis of Continuous Uncertain Decision System
连续不确定决策系统及其扩展Rough集分析

The DT with these entries named Continuous Uncertain Decision Table (CUDT) cannot be analyzed directly by CRST. Fortunately, by modeling those three types of entries in CUDT with Fuzzy sets theory, we found that CUDT can be transformed into a special DT called Extended Decision Table (EDT) in which each entry is associated with a membership degree. An extended CRST based on this idea is proposed to transform the CUDT into EDT, and the lower approximations and the boundaries of decision concepts in EDT are also calculated by our extended CRST as an input of the rule induction algorithms.