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−	'''~~Content Coming Soon~~'''	+	== Definition ==
		+	'''PROxy Based Estimating (PROBE)''' is a technique used in software development for estimating the size, effort, and duration of a project based on historical data and the use of proxies. Proxies are measurable attributes or characteristics of a software system that can be used to estimate its size or complexity. PROBE is a part of the Personal Software Process (PSP), developed by Watts Humphrey, which is a methodology aimed at helping individual software developers improve their personal productivity and software quality.
		+
		+
		+	== Purpose and Role ==
		+	The purpose of PROBE is to provide a structured and data-driven approach for estimating software projects, ultimately leading to more accurate and reliable estimates. The role of PROBE includes:
		+	*'''Estimating project size:''' By using proxies, developers can estimate the size of a project in terms of lines of code, function points, or other relevant metrics.
		+	*'''Estimating effort:''' Based on historical data and the size estimate, developers can predict the amount of effort required to complete the project.
		+	*'''Estimating duration:''' Using the effort estimate and available resources, developers can estimate the duration or schedule of the project.
		+
		+
		+	== Components ==
		+	PROBE consists of several components, which together form the basis of the estimation process:
		+	*'''Historical data:''' PROBE relies on historical data from previous projects to provide a basis for estimation. Developers should maintain a database of their past projects, including size, effort, and duration metrics.
		+	*'''Proxy:''' A proxy is a measurable attribute or characteristic of a software system that can be used to estimate its size or complexity. Examples of proxies include lines of code, function points, and object points.
		+	*'''Estimation equations:''' PROBE uses estimation equations based on linear regression or other statistical methods to relate proxies to effort and duration. Developers can derive these equations from their historical data.
		+	*'''Prediction:''' Using the proxy values and estimation equations, developers can predict the size, effort, and duration of a new project.
		+
		+
		+	== Importance ==
		+	PROBE is important in software development for several reasons:
		+	*'''Data-driven approach:''' PROBE uses historical data and statistical methods to produce more accurate and reliable estimates, reducing the risk of over- or under-estimating project resources and timelines.
		+	*'''Personalized estimation:''' PROBE allows developers to create personalized estimation models based on their own historical data, taking into account individual differences in productivity and experience.
		+	*'''Continuous improvement:''' By maintaining a database of historical project data, developers can continually refine and improve their estimation models, leading to better predictions over time.
		+
		+
		+	== Example ==
		+	Suppose a software developer has historical data for three previous projects:
		+	*Project A: 2,000 lines of code, 150 hours of effort, 4 weeks duration.
		+	*Project B: 4,500 lines of code, 300 hours of effort, 8 weeks duration.
		+	*Project C: 6,000 lines of code, 450 hours of effort, 10 weeks duration.
		+	The developer can use this data to create a linear regression model relating lines of code (proxy) to effort and duration. For a new project with an estimated 3,000 lines of code, the developer can then use the regression model to predict the effort and duration required to complete the project.
		+
		+
		+	== See Also ==
		+	[[Software Development]]
		+	__NOTOC__

PROxy Based Estimating (PROBE) - Revision history

User at 01:58, 20 April 2023

User: Created page with "'''Content Coming Soon'''"