一种形式化上下无关文法关系驱动的设计模式检测方法

针对设计模式识别结果的假阴性问题与重叠问题，为提高设计模式实例恢复的精确性，提出一种形式化上下无关文法关系驱动的设计模式检测方法。依据设计模式实例中的参与者属性及其关系，以形式化可视化语言描述模式实例的识别文法。在此基础上，改进该文法检测设计模式实例参与者间的附加关系，并识别共享实例的模式。实验结果表明，新方法不仅减少了模式实例的假阴性结果，还解决了模式实例识别的重叠问题，与其他检测方法的精确度、召回率及F-score指标比较，新方法取得了较好的效果。

An approach for design pattern detection based on the formal context-free grammar relation driver

Aiming at the false negative problem and the overlap problem in pattern instance detection, in order to improve the ac-curacy of the design pattern recovery, this article introduces an approach for design pattern detection based on the formal context-free grammar relation driver. Focusing on the attribute and relationship of classes in pattern instances, the formal grammar of pattern in-stance identification is established using the visual language, and an improved formalism grammar is presented for identifying the addi-tional relationships and the sharing problem of design pattern instances. Experimental results show that, compared with other well-known algorithms by precision, recall and F-score, the proposed method can reduce the false negative results and the overlap problem in pattern instance detection, indicating the effectiveness of the proposed method.