A Novel Effort Estimation Model for Software Requirement Changes During Software Development Phase

Jalal Shah, Nazri Kama and Nur Azaliah A Bakar

Department of Razak Faculty of Technology and Informatics, Universiti Teknologi
Malaysia, Kuala Lumpur, Malaysia

ABSTRACT

Software Requirements Changes is a typical phenomenon in any software development project. Restricting incoming changes might cause user dissatisfaction and allowing too many changes might cause delay in project delivery. Moreover, the acceptance or rejection of the change requests become challenging for software project managers when these changes are occurred in Software Development Phase. Where in Software Development Phase software artifacts are not in consistent state such as: some of the class artifacts are Fully Developed, some are Half Developed, some are Major Developed, some are MinorDeveloped and some are Not Developed yet. However, software effort estimation and change impact analysis are the two most common techniques which might help software project managers in accepting or rejecting change requests during Software Development Phase. The aim of this research is to develop a new software change effort estimation model which helps software project manager in estimating the effort for software Requirement Changes during Software Development Phase. Thus, this research has analyzed the existing effort estimation models and change impact analysis techniques for Softwrae Development Phase from the literature and proposed a new software change effort estimation model by combining change impact analysis technique with effort estimation model. Later, the new proposed model has been ealuated by selecting four small size software projects as case selections in applying experimentalapproch. The experiment results show that the overall Mean Magnitude Relative Error value produced by he new proposed model is under 25%. Hence it is concluded that the new proposed model is applicable in
estimating the amount of effort for requirement changes during SDP.

KEYWORDS

Software Change Effort Estimation, Software Requirement Changes, Function Point Analysis, Constructive ost Model and Software Development Phase. 










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