A Method for Software Requirement Volatility Analysis Using QFD

Abstract

Changes of software requirements are inevitable during the development life cycle. Rather than avoiding the circumstance, it is easier to just accept it and find a way to anticipate those changes. This paper proposes a method to analyze the volatility of requirement by using the Quality Function Deployment (QFD) method and the introduced degree of volatility. Customer requirements are deployed to software functions and subsequently to architectural design elements. And then, after determining the potential for changes of the design elements, the degree of volatility of the software requirements is calculated. In this paper the method is described using a flow diagram and illustrated using a simple example, and is evaluated using a case study.

Two case reports using a proposed oral risk assessment tool for older people near the end of life

“…A prototype Dental Risk‐Map (Dental R‐map) to express the need for intervention to address risks and the effectiveness of treatment was created as shown in Table 1. Risk maps (R‐maps) are a method of quantifying risk by using a matrix with the frequency of occurrence on the vertical axis and the extent of the injury on the horizontal axis to express the severity of the risk (Anang et al, 2016; Schiele et al, 2012; Zhao, 2012). They are widely used in economics and industry as visual representations of risky and safe domains, and they allow risks before intervention, the risk‐mitigating effect of the intervention, and postintervention risks to be plotted in the same matrix.…”