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Lecture Software engineering (7/e): Chapter 28 – Ian Sommerville

This topic will describe: Process and product quality, process classification, process measurement, process analysis and modelling, process change, the CMMI process improvement framework. | Process Improvement To explain the principles of software process improvement To explain how software process factors influence software quality and productivity To explain how to develop simple models of software processes To explain the notion of process capability and the CMMI process improvement model Objectives Process and product quality Process classification Process measurement Process analysis and modelling Process change The CMMI process improvement framework Topics covered Understanding existing processes and introducing process changes to improve product quality, reduce costs or accelerate schedules. Most process improvement work so far has focused on defect reduction. This reflects the increasing attention paid by industry to quality. However, other process attributes can also be the focus of improvement Process improvement Process attributes The process improvement cycle Process measurement Attributes of the current process are measured. These are a baseline for . | Process Improvement To explain the principles of software process improvement To explain how software process factors influence software quality and productivity To explain how to develop simple models of software processes To explain the notion of process capability and the CMMI process improvement model Objectives Process and product quality Process classification Process measurement Process analysis and modelling Process change The CMMI process improvement framework Topics covered Understanding existing processes and introducing process changes to improve product quality, reduce costs or accelerate schedules. Most process improvement work so far has focused on defect reduction. This reflects the increasing attention paid by industry to quality. However, other process attributes can also be the focus of improvement Process improvement Process attributes The process improvement cycle Process measurement Attributes of the current process are measured. These are a baseline for assessing improvements. Process analysis The current process is assessed and bottlenecks and weaknesses are identified. Process change Changes to the process that have been identified during the analysis are introduced. Process improvement stages Process quality and product quality are closely related and process improvement benefits arise because the quality of the product depends on its development process. A good process is usually required to produce a good product. For manufactured goods, process is the principal quality determinant. For design-based activity, other factors are also involved especially the capabilities of the designers. Process and product quality Principal product quality factors Quality factors For large projects with ‘average’ capabilities, the development process determines product quality. For small projects, the capabilities of the developers is the main determinant. The development technology is particularly significant for small projects. In all cases, if an .