Estimation of Defects Based onDefect Decay Model: ED3M
Scope of the project :
The goal of the project is estimate the defects in a
software product. The availability of this estimate allows a test manager to
improve his planning, monitoring, and controlling activities; this provides a
more efficient testing process. estimators can achieve high accuracy as more
and more data becomes available and the process nears completion.
Introduction :
Software metrics are crucial for characterizing the
development status of a software product. Well-defined metrics can help to
address many issues, such as cost, resource planning (people, equipment such as
testbeds, etc.), and product release schedules. Metrics have been proposed for
many phases of the software development lifecycle, including requirements,
design, and testing. In this paper, the focus is on characterizing the status
of the software testing effort using a single key metric: the estimated number
of defects in a software product.
The availability of this estimate allows a
test manager to improve his planning, monitoring, and controlling
activities; this provides a more efficient testing process. Also, since, in
many companies, system testing is one of the last phases (if not the last), the
time to release can be better assessed; the estimated remaining defects can be
used to predict the required level of customer support.
Ideally, a defect
estimation technique has several important characteristics. First, the
technique should be accurate as decisions based on inaccurate estimates can be
time consuming and costly to correct. However, most estimators can achieve high
accuracy as more and more data becomes available and the process nears
completion.
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