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Algorithmic Optimisation Method for Improving Use Case Points Estimation.

Silhavy R, Silhavy P, Prokopova Z - PLoS ONE (2015)

Bottom Line: Final estimation is obtained by using newly developed estimation equation, which used two correction coefficients.The Algorithmic Optimisation Method performs approximately 43% better than the Use Case Points method, based on their magnitude of relative error score.All results were evaluated by standard approach: visual inspection, goodness of fit measure and statistical significance.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Applied Informatics, Tomas Bata University in Zlin, Zlin, Czech Republic.

ABSTRACT
This paper presents a new size estimation method that can be used to estimate size level for software engineering projects. The Algorithmic Optimisation Method is based on Use Case Points and on Multiple Least Square Regression. The method is derived into three phases. The first phase deals with calculation Use Case Points and correction coefficients values. Correction coefficients are obtained by using Multiple Least Square Regression. New project is estimated in the second and third phase. In the second phase Use Case Points parameters for new estimation are set up and in the third phase project estimation is performed. Final estimation is obtained by using newly developed estimation equation, which used two correction coefficients. The Algorithmic Optimisation Method performs approximately 43% better than the Use Case Points method, based on their magnitude of relative error score. All results were evaluated by standard approach: visual inspection, goodness of fit measure and statistical significance.

No MeSH data available.


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Algorithmic Optimisation Method Schema.
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pone.0141887.g001: Algorithmic Optimisation Method Schema.

Mentions: AOM brings tree-phases design, as can be seen in Fig 1. The Preparation Phase (Phase I) is used for calculation of the (a1, a2) correction coefficients. Least Squares Regression (LSR), or, more precisely, multiple linear regression is used for obtaining these coefficients (a1, a2). Following formula is applying for calculation:(y1⋮yn)=(x11⋮x12⋮xn1xn2)×(a1a2)⇒(a1a2)=(XT×X)−1×(XT×Y)(6)


Algorithmic Optimisation Method for Improving Use Case Points Estimation.

Silhavy R, Silhavy P, Prokopova Z - PLoS ONE (2015)

Algorithmic Optimisation Method Schema.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4638361&req=5

pone.0141887.g001: Algorithmic Optimisation Method Schema.
Mentions: AOM brings tree-phases design, as can be seen in Fig 1. The Preparation Phase (Phase I) is used for calculation of the (a1, a2) correction coefficients. Least Squares Regression (LSR), or, more precisely, multiple linear regression is used for obtaining these coefficients (a1, a2). Following formula is applying for calculation:(y1⋮yn)=(x11⋮x12⋮xn1xn2)×(a1a2)⇒(a1a2)=(XT×X)−1×(XT×Y)(6)

Bottom Line: Final estimation is obtained by using newly developed estimation equation, which used two correction coefficients.The Algorithmic Optimisation Method performs approximately 43% better than the Use Case Points method, based on their magnitude of relative error score.All results were evaluated by standard approach: visual inspection, goodness of fit measure and statistical significance.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Applied Informatics, Tomas Bata University in Zlin, Zlin, Czech Republic.

ABSTRACT
This paper presents a new size estimation method that can be used to estimate size level for software engineering projects. The Algorithmic Optimisation Method is based on Use Case Points and on Multiple Least Square Regression. The method is derived into three phases. The first phase deals with calculation Use Case Points and correction coefficients values. Correction coefficients are obtained by using Multiple Least Square Regression. New project is estimated in the second and third phase. In the second phase Use Case Points parameters for new estimation are set up and in the third phase project estimation is performed. Final estimation is obtained by using newly developed estimation equation, which used two correction coefficients. The Algorithmic Optimisation Method performs approximately 43% better than the Use Case Points method, based on their magnitude of relative error score. All results were evaluated by standard approach: visual inspection, goodness of fit measure and statistical significance.

No MeSH data available.


Related in: MedlinePlus