Software development effort estimation: Difference between revisions

Revision as of 21:22, 5 November 2009

Revision as of 02:23, 13 January 2010

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[[Software development]] effort [[estimation]] is the process of predicting the most realistic use of effort required to develop or maintain [[software]] based on incomplete, uncertain and/or noisy input. Effort estimates may be used as input to project plans, iteration plans, budgets, investment analyses, pricing processes and bidding rounds.

== State-of-practice ==

Published surveys on estimation practice suggest that expert estimation is the dominant strategy when estimating software development effort<ref>{{cite web

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| ANGEL

|-

| [[Work_breakdown_structureWork breakdown structure|WBS-based]] (bottom up) estimation

| Expert estimation

| [[MS Project]], company specific activity templates

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| [[COCOMO]], SLIM, [[SEER-SEM]]

|-

| Size-based estimation models<ref>Hill Peter (ISBSG) - Estimation Workbook 2 - published by International Software Benchmarking Standards Group [http://www.isbsg.org/ISBSGnew.nsf/WebPages/~GBL~Practical%20Project%20Estimation%202nd%20Edition ISBSG - Estimation and Benchmarking Resource Centre] </ref>

| Formal estimation model

| [[Function Point Analysis]]<ref>Morris Pam - Overview of Function Point Analysis [http://www.totalmetrics.com/function-point-resources/what-are-function-points Total Metrics - Function Point Resource Centre] </ref>, [[Use Case]] Analysis, [[Story points]]-based estimation in [[Agile software development]]

|-

| Group estimation

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== External links ==

* Industry Productivity data for Input into Software Development Estimates and guidance and tools for Estimation - International Software Benchmarking StandrdsStandards Group: http://www.isbsg.org

* Special Interest Group on Software Effort Estimation: http://www.forecastingprinciples.com/Software_Estimation/index.html

* General forecasting principles: http://www.forecastingprinciples.com

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{{reflist}}

[[Category: Software project management]]