1. This enhancing mode constructs a disjunctive normal form on concept expressions and keeps only one conjunctive clause, and then substitutes the obtained succinctest conjunctive clause for sub-concepts set in the labeling of nodes of a completion tree constructed by the tableau algorithm (such a process may be repeated as many times as needed).
该增强方式对概念描述先构建一个析取范式，并只保留其中的一个合取子句，然后用这个获得的最简的概念合取子句去取代传统tableau算法构建的完整树的结点标记中的子概念集（这个过程根据需要可重复多次）。