提出可解释的模糊规则模型,能自动判断是否该放弃预测。
Evidential Rule Learning for Interpretable Classification with Abstention
- 基于模糊隶属度直接生成证据输出,无需额外模块或多次推理。
- 在30个表格数据集上平均准确率领先第二名2.6%,且置信集合覆盖率达92%。
- 能识别异常属性,适合需要可解释性与拒绝不确定预测的场景。
可解释分类不仅要求高准确率,还应透明展示决策依据并能在不确定时放弃预测。我们提出快速证据规则学习(FERL),一种学习可解释、高精度模糊规则模型的方法,其输出具有证据特性。与后处理校准不同,FERL的信念、可信度和拒识能力直接源于单一确定性前向传播中的模糊隶属度,无需辅助头、预留集或重复推理。理论分析表明,FERL具备Lipschitz稳定性,即输出随输入变化平滑。在30个表格数据集基准测试中,其平均准确率比次优方法高出2.6%;其原生集合预测在可信分类器中实现最优效用折扣准确率(u₆₅/u₈₀=0.80/0.83),且集合覆盖率高达0.92,远超≤0.82的基线。在近域外检测任务中,其性能(77.7 AUROC)媲美专用检测器(77.4)。在概念瓶颈评估中,于CUB和AwA2数据集上,其AUROC仅落后最强检测器2.3点,同时在AwA2上取得最佳AUPR-Out(68.3)与新类别拒绝率(57.2),并能指出具体异常属性。
原文摘要 · Abstract (English)
Interpretable classification often requires more than accurate predictions for real-life deployment: models should be transparent about the evidence behind their decisions and abstain when they cannot decide reliably. We introduce Fast Evidential Rule Learning (FERL), a method that learns interpretable, accurate fuzzy rule models whose outputs are evidential. Unlike post-hoc calibration, FERL's belief, plausibility, and abstention capabilities arise directly from the fuzzy memberships in a single deterministic pass, with no auxiliary head, held-out set, or repeated inference. Our theoretical analysis further shows that FERL is Lipschitz stable, which means that its evidential outputs vary smoothly with the input. Against state-of-the-art rule learners, FERL is statistically significantly more accurate across a 30 tabular-dataset benchmark ($+2.6\%$ average accuracy over the second best). Its native set predictions attain the best utility-discounted accuracy among credal classifiers ($u_{65}/u_{80}=0.80/0.83$ vs.\ $0.79/0.80$ for the naive credal classifier), at higher set coverage ($0.92$ vs.\ $\le0.82$). FERL also matches dedicated out-of-distribution detectors on tabular near-OOD detection ($77.7$ vs.\ $77.4$ AUROC for the strongest baseline). Under detector-class-disjoint concept-bottleneck evaluation, its it is within $2.3$ AUROC points of the strongest dedicated detector on both CUB and AwA2, while attaining the best AwA2 AUPR-Out ($68.3$) and novel-class rejection ($57.2$), while being able to name which attributes are anomalous.
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