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  2. Software development effort estimation - Wikipedia

    en.wikipedia.org/wiki/Software_development...

    Formal estimation model: The quantification step is based on mechanical processes, e.g., the use of a formula derived from historical data. Combination-based estimation: The quantification step is based on a judgmental and mechanical combination of estimates from different sources. Below are examples of estimation approaches within each category.

  3. COCOMO - Wikipedia

    en.wikipedia.org/wiki/COCOMO

    The Constructive Cost Model (COCOMO) is a procedural software cost estimation model developed by Barry W. Boehm. The model parameters are derived from fitting a regression formula using data from historical projects (63 projects for COCOMO 81 and 163 projects for COCOMO II).

  4. Putnam model - Wikipedia

    en.wikipedia.org/wiki/Putnam_model

    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). SLIM (Software LIfecycle Management) is the name given by Putnam to the proprietary suite of tools his company QSM, Inc. developed, based on his model.

  5. Wideband delphi - Wikipedia

    en.wikipedia.org/wiki/Wideband_delphi

    The Wideband Delphi estimation method is a consensus-based technique for estimating effort. [1] It derives from the Delphi method which was developed in the 1950-1960s at the RAND Corporation as a forecasting tool. It has since been adapted across many industries to estimate many kinds of tasks, ranging from statistical data collection results ...

  6. Three-point estimation - Wikipedia

    en.wikipedia.org/wiki/Three-point_estimation

    These values are used to calculate an E value for the estimate and a standard deviation (SD) as L-estimators, where: E = (a + 4m + b) / 6 SD = (b − a) / 6. E is a weighted average which takes into account both the most optimistic and most pessimistic estimates provided. SD measures the variability or uncertainty in the estimate.

  7. Halstead complexity measures - Wikipedia

    en.wikipedia.org/wiki/Halstead_complexity_measures

    The effort measure translates into actual coding time using the following relation, Time required to program: T = E 18 {\displaystyle T={E \over 18}} seconds Halstead's delivered bugs (B) is an estimate for the number of errors in the implementation.

  8. Cost estimation in software engineering - Wikipedia

    en.wikipedia.org/wiki/Cost_estimation_in...

    Cost estimation in software engineering is typically concerned with the financial spend on the effort to develop and test the software, this can also include requirements review, maintenance, training, managing and buying extra equipment, servers and software. Many methods have been developed for estimating software costs for a given project.

  9. Use case points - Wikipedia

    en.wikipedia.org/wiki/Use_Case_Points

    Use case points (UCP or UCPs) is a software estimation technique used to forecast the software size for software development projects. UCP is used when the Unified Modeling Language (UML) and Rational Unified Process (RUP) methodologies are being used for the software design and development.