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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. 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.

  4. Program evaluation and review technique - Wikipedia

    en.wikipedia.org/wiki/Program_Evaluation_and...

    The duration (5.33 work days) is subtracted from the LF to get an LS of 3.84 work days. The LF for a is the minimum LS of its successor activities. Since c has an LS of 4 work days and d has an LS of 8.68 work days, the LF for a is 4 work days. The duration (4 work days) is subtracted from the LF to get an LS of 0 work days.

  5. COCOMO - Wikipedia

    en.wikipedia.org/wiki/COCOMO

    The Intermediate Cocomo formula now takes the form: E = a i (KLoC) b i (EAF) where E is the effort applied in person-months, KLoC is the estimated number of thousands of delivered lines of code for the project, and EAF is the factor calculated above. The coefficient a i and the exponent b i are given in the next table.

  6. 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 ...

  7. Estimation (project management) - Wikipedia

    en.wikipedia.org/wiki/Estimation_(project...

    Analogy based estimation; Compartmentalization (i.e., breakdown of tasks) Cost estimate; Delphi method; Documenting estimation results; Educated assumptions; Estimating each task; Examining historical data; Identifying dependencies; Parametric estimating; Risk assessment; Structured planning; Popular estimation processes for software projects ...

  8. 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.

  9. Proxy-based estimating - Wikipedia

    en.wikipedia.org/wiki/Proxy-based_estimating

    Proxy-Based Estimating (PROBE) is an estimating process used in the Personal Software Process (PSP) to estimate size and effort.Proxy Based Estimating (PROBE), is the estimation method introduced by Watts Humphrey (of the Software Engineering Institute at Carnegie Mellon University) as part of the Personal Software Process (a discipline that helps individual software engineers monitor, test ...