Given a change proposal, how can we evaluate the changeability of the original system to absorb this change proposal before change implementation? Changes to software often have unexpected ripple effects. To avoid this and alleviate the risk of performing undesirable changes, a predictive measurement of these ripple effects should be conducted and a decision of acceptance or rejection should be made on this change proposal. In this paper, we propose an approach to evaluate a software system's changeability with two steps. First, our approach uses formal concept analysis to perform change impact analysis ($CIA$), which estimates the ripple effects of the change proposal. Then, we propose a novel impactness metric to indicate the system's changeability to absorb this change proposal. Case studies on three real-world programs show the effectiveness of our changeability assessment approach.
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机译：鉴于更改提案，我们如何在改变实施之前评估原始系统的可变性，以吸收这种变更提案？对软件的更改通常具有意外的纹波效果。为避免这种情况并减轻表现不良变化的风险，应对这些纹波效应进行预测测量，并应对这一更改提案进行接受或拒绝的决定。在本文中，我们提出了一种评估软件系统的可变性与两个步骤的方法。首先，我们的方法使用正式的概念分析来执行变更影响分析（$ CIA $），估计变更提案的涟漪效应。然后，我们提出了一种新的碰撞度量，以表明系统的可变性，以吸收这种变更提议。关于三个现实世界计划的案例研究表明了我们的变化评估方法的有效性。
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