1. Software Engineering II
Lecture 22
Fakhar Lodhi

2. Recap

3. Software Engineering II
Lecture 22
Fakhar Lodhi

4. Relationship between people and effort
Communication and coordination overhead
Number of Channels C = N(N-1)/2
Communication overhead per channel k
Work accomplished W = (1-k)c x N

5. N = 5
N = 3

6. Task Set Definition
Process model  task sets (SE work tasks, milestones, and deliverables)
Enable a software team to define, develop, and support
Each software process should define a collection of task sets, each designed to meet the needs of different types of projects

7. Project Types and Rigor
Different types of projects and different degree of rigor
Types of projects
Concept development projects
New application development
Application enhancement
Application maintenance
Reengineering projects

8. Degree of Rigor
Casual
All process framework activities are applied, but only a minimum task set is required
Reduced umbrella tasks, reduced documentation
Basic principles of SE are followed

9. Degree of Rigor Structured Process framework is applied
Appropriate framework activities, related tasks, and umbrella activities (to ensure high quality) applied
SQA, SCM, documentation, and measurement conducted in streamlined manner.

10. Degree of Rigor Strict Full process
All umbrella activities are applied
Robust work products
Quick Reaction
Because of emergency, only task essential for maintaining good quality are applied.
Back-filling

11. Defining Adaptation Criteria
Size of the project
Number of potential users
Mission criticality
Application longevity
Stability of requirements
Ease of customer/developer communication
Maturity of application technology
Performance constraints
Embedded or non-embedded characteristics
Project staff
Reengineering factors

12. Computing a Task Set Selector (TSS) value
Adaptation criteria, grade, weight, entry point multiplier
Assign appropriate grades (1-5) to each adaptation criteria
Review weighting factor and modify if needed. The ranges should be between 0.8 to 1.2
Multiply the grade entered by the weight and by entry point multiplier for the type of project undertaken. The entry point multiplier takes a value of 0 or 1 and indicates the relevance of the adaptation criterion to the project type.
product = grade x weight x entry point multiplier
TSS = average of all the entries in the product column

13. TSS Degree of Rigor < 1.2 Casual 1.0 – 3.0 Structured > 2.4
Strict
The overlap in TSS values is intentional and it depicts that sharp boundaries are impossible to define when making task set selection. In the final analysis, the TSS value, past experience, and common sense must all be factored into the choice of the task set for a project.