Software Cost Estimating

Software Cost Estimating

1. Parkinson Principle

   • Work expands to fit the available resources

2. Price-To-Win

   • Propose an attractive price for customer

3. Analogy

   • Comparison to other projects

4. Expert judgement

   • Find a group of experts to create a forecast

5. Algorithmic models

   • FPA
     • Can help with sketchy requirements
     • Become more accurate as requiremetns defined
     • Aimed at data intensive systems
     • UFC (Unadjusted FP Count)
     • UFC = (A*inputs)+(B*outputs)+(C*user enquiries)+(D*external data file accesses)+(E*internal data file accesses)
   • COCOMO
   • Objective, transparent
   • Require colloaboration, not always accurate