Future effort estimates are made by providing size and calculating the associated effort using the equation which fit the original data (usually with some error).
It may be tempting to skip this review due to a lack of time, personnel or budget, and there is the unappealing possibility that a close examination may reveal faults in the logic of your process.
Nevertheless, the costs involved in performing a proper validation will be dramatically less than the cost overruns that are likely to develop during a poorly managed software project. Both the process used to build the estimate and the estimate itself must be evaluated.
The points along the curve represent the estimated total effort to complete the project at some time.
One of the distinguishing features of the Putnam model is that total effort decreases as the time to complete the project is extended.
Its core purpose is to help organizations improve their software engineering capabilities and develop or acquire the right software, defect free, within budget and on time, every time.
Step Seven: Estimate Validation and Review At this point in the process, your estimate should already be reasonably good-but it may not be as good as you think.Results The derivation cohort included 14 756 incident cases of venous thromboembolism from 10 095 199 person years of observation (rate of 14.6 per 10 000 person years).The validation cohort included 6913 incident cases from 4 632 694 person years of observation (14.9 per 10 000 person years).Independent predictors included in the final model for men and women were age, body mass index, smoking status, varicose veins, congestive cardiac failure, chronic renal disease, cancer, chronic obstructive pulmonary disease, inflammatory bowel disease, hospital admission in past six months, and current prescriptions for antipsychotic drugs.Future effort estimates are made by providing size and calculating the associated effort using the equation which fit the original data (usually with some error). the Putnam model describes the time and effort required to finish a software project of specified size.Participants Patients aged 25-84 years, with no record of pregnancy in the preceding 12 months or any previous venous thromboembolism, and not prescribed oral anticoagulation at baseline: 2 314 701 in derivation cohort and 1 240 602 in validation cohort.