Predicting failure-proneness in an evolving software product line

As the product line matures, the learner performance improves significantly for two of the three datasets, but not for prediction of post-release failure-prone files using only pre-release change data. This suggests that it may be difficult to detect failure-prone files in the evolving product line. At least in part, this may be due to the continuous change, even for commonalities and high-reuse variation components, which we previously have shown to exist.