Dynamic and Automatic Feedback-Based Threshold Adaptation for Code Smell Detection

doi:10.1109/TSE.2015.2503740

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Dynamic and Automatic Feedback-Based Threshold Adaptation for Code Smell Detection

2016-06-01

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DOI：10.1109/TSE.2015.2503740

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Abstract

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Most code smell detection tools expose thresholds to engineers for customization because code smell detection is essentially subjective and application specific. Another reason why engineers should customize these thresholds is that they have different working schedules and different requirements on software quality. They have their own unique need on precision and recall in smell detection. This unique need should be fulfilled by adjusting thresholds of smell detection tools. However, it is difficult for software engineers, especially inexperienced ones, to adjust often contradicting and related thresholds manually. One of the possible reasons is that engineers do not know the exact quantitative relation between threshold values and performance, e.g., precision. In this paper, we propose an approach to adapting thresholds automatically and dynamically. Engineers set a target precision manually according to their working schedules and quality requirements. With feedback from engineers, the proposed approach then automatically searches for a threshold setting to maximize recall while having precision close to the target precision. The proposed approach has been evaluated on open-source applications. Evaluation results suggest that the proposed approach is effective.

Keywords:

Software refactoring

code smells

feedback control

smell identification

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