关键词: 软件度量 面向对象 内聚 继承

Abstract:

In this paper, we firstly introduce the common characteristics of object-oriented software, describe the C＆K metrics suite, and focuses on analysing the criterion for DIT and NOC which is dependent on inheritance, Based on this, the paper analyzes the inheritance of the elements（method and attribute  e） in the super classes and the derived classes,and proposes a new class cohesion measurement model that will overcome the flaws of the C＆K metrics in n inheritance and polymorphism, and provides a new guide to evaluating the cohesion between the classes.

Key words: software metric, object-oriented, cohesion, inheritance