Thursday, 13 February 2020

Effort Estimation

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Effort Estimation


? MANY PEOPLE HAVE REFERRED TO ESTIMATION AS A “BLACK ART.” This makes
some intuitive sense: at first glance, it might seem that estimation is a highly subjective
process.
? Inaccurate estimates and misconceptions about the estimating process often contribute to
failed projects.
? When infeasible plans are implemented, the result is often missed deadlines, inadequate
performance and/or poor quality.
? Project work estimation has three phases: the initial first cut, commonly known as SWAG
(scientific wild-ass guess), tracking the estimate against the actual numbers, and using the
schedule to see what’s happening in your project.
? If you’ve been assigned project estimates, or if your project estimates aren’t particularly
close to reality, don’t fret. Try these techniques to make and learn about your estimates.
? Software systems, unless they are thoroughly understood, can be like an ice berg. They are
becoming more and more difficult to understand.
? Improvement of coding tools allows software developers to produce large amounts of
software to meet an ever expanding need from users.
Software Project Management
Notes ? MK II for analysis and measurement of information processing applications based on end
user functional view of the system.
? Constructive Cost Model is static single-variable model. Barry Boehm introduced
COCOMO models.


COCOMO: Constructive Cost Model
EI: External Inputs
EIF's: External Interface Files
EO: External Outputs
EQ: External Inquiry
IFPUG: International Function Point User Group
ILF's: Internal Logical Files
PERT: Program Evaluation and Review Technique
PROBE: Proxy Based Estimation

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