Since applying design patterns provides a foresight of the exibility and future extensibility of software, their application is expected to constructing evolutionable software. However, there have been few research on quantitative evaluation of the e ectiveness of applying design patterns to software development. In this paper, we aim to evaluate the e ectiveness of applying design patterns. Th...

Software project teams have a wide range of software metrics and measurement models at their disposal to monitor important aspects of their software system, their development process and the team itself. Theoretically, monitoring allows a team to identify and solve problems in a timely manner. Unfortunately, in practice software project teams make little effective use of software metrics to ens...

Metrics are key components of any engineering discipline, software engineering is no exception. Software metrics is often used to refer to broad range of measurements for computer software. Since the 1950s (???) when software engineering were greatly researched on, software metrics were developed continuously and became an important research area in the field of software engineering. The need f...

Class cohesion is considered as one of important object-oriented software attributes. Cohesion refers to the degree of the relatedness of the members in a class. High cohesion is a desirable property of classes. Several metrics have been proposed in the literature in order to measure class cohesion in object-oriented systems. They capture class cohesion in terms of connections among members wit...

Over the last few years, a growing number of studies have explored how Aspect-Oriented Programming (AOP) might impact software maintainability. Most of the studies use coupling metrics to assess the impact of AOP mechanisms on maintainability attributes such as design stability. Unfortunately, the use of such metrics is fraught with dangers, which have so far not been thoroughly investigated. T...

An eeective metric program is dependent upon high quality metric collection and analysis tools. One of the principal lessons to emerge from software measurement over the last twenty years is the need for metric collection tools (Fenton 1992). Conclusions reached from researching existing object-oriented metrics and supporting metric suite tools, indicate that there are certain qualities require...

Managers at the National Aeronautics and Space Administration's (NASA) Mission Operations Directorate (MOD) at the Johnson Space Center wanted to increase their insight into the cost, schedule, and quality of the software-intensive systems maintained for the Space Shuttle programs. We defined and imple-mented a software metrics set that contains thirteen metrics related to corrective and adapti...

Many of the software fail due to poor quality. Estimating software quality is an important task in the software development. The development of large software system is a time consuming and resource consuming activity. Software metrics are necessary to identify where the resources are needed; they are a crucial source of information for decision making. To produce high quality object oriented a...

This paper presents a new package cohesion metric (CohP), which is based on the properties of elements of a package and dependencies with in the package elements. The proposed metric has been validated theoretically against Briand properties as well as empirically using packages taken from two open source software systems. An attempt has also been made to present a positive Spearman correlation...