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Ranking and Clustering Software Cost Estimation Models through a Multiple Comparisons Algorithm.

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Title: Ranking and Clustering Software Cost Estimation Models through a Multiple Comparisons Algorithm.
Authors: Mittas, Nikolaos1, Angelis, Lefteris1
Source: IEEE Transactions on Software Engineering. Apr2013, Vol. 39 Issue 4, p537-551. 15p. 9 Charts, 4 Graphs.
Subjects: Computer software costs, Estimation theory, Algorithms, Statistics, Experimental design
Abstract: Software Cost Estimation can be described as the process of predicting the most realistic effort required to complete a software project. Due to the strong relationship of accurate effort estimations with many crucial project management activities, the research community has been focused on the development and application of a vast variety of methods and models trying to improve the estimation procedure. From the diversity of methods emerged the need for comparisons to determine the best model. However, the inconsistent results brought to light significant doubts and uncertainty about the appropriateness of the comparison process in experimental studies. Overall, there exist several potential sources of bias that have to be considered in order to reinforce the confidence of experiments. In this paper, we propose a statistical framework based on a multiple comparisons algorithm in order to rank several cost estimation models, identifying those which have significant differences in accuracy, and clustering them in nonoverlapping groups. The proposed framework is applied in a large-scale setup of comparing 11 prediction models over six datasets. The results illustrate the benefits and the significant information obtained through the systematic comparison of alternative methods. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Software Engineering is the property of IEEE Computer Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Ranking and Clustering Software Cost Estimation Models through a Multiple Comparisons Algorithm.
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Software+Engineering%22">IEEE Transactions on Software Engineering</searchLink>. Apr2013, Vol. 39 Issue 4, p537-551. 15p. 9 Charts, 4 Graphs.
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  Data: Software Cost Estimation can be described as the process of predicting the most realistic effort required to complete a software project. Due to the strong relationship of accurate effort estimations with many crucial project management activities, the research community has been focused on the development and application of a vast variety of methods and models trying to improve the estimation procedure. From the diversity of methods emerged the need for comparisons to determine the best model. However, the inconsistent results brought to light significant doubts and uncertainty about the appropriateness of the comparison process in experimental studies. Overall, there exist several potential sources of bias that have to be considered in order to reinforce the confidence of experiments. In this paper, we propose a statistical framework based on a multiple comparisons algorithm in order to rank several cost estimation models, identifying those which have significant differences in accuracy, and clustering them in nonoverlapping groups. The proposed framework is applied in a large-scale setup of comparing 11 prediction models over six datasets. The results illustrate the benefits and the significant information obtained through the systematic comparison of alternative methods. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEEE Transactions on Software Engineering is the property of IEEE Computer Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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