Class Cohesion Metrics in Object Oriented Systems

In order to improve the quality of an application during the development process, developers use several metrics. These metrics measure the different software attributes such as cohesion, coupling and complexity. To measure the class cohesion several class cohesion metrics have been introduced till date. Cohesion is measured during the design phase to predict software quality. A high cohesive module is easier to understand, modify and maintain in comparison to a less cohesive module. Class cohesion metrics measure the relatedness of the methods and attributes within a class. Several metrics have been proposed in the literature to evaluate class cohesion based on the information that is available during high or low level design phases. This review paper discusses some of the metrics proposed till date.