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arXiv 2402.12307cs.LGcs.AI
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面向异构传感器融合的多视图保形学习

Multi-View Conformal Learning for Heterogeneous Sensor Fusion

Tecnlogico de Monterrey(蒙特雷科技大学)

Enrique Garcia-Ceja

AI总结:

针对异构传感器融合中预测可信度评估不足的问题,构建多视图保形模型提供边际置信度保证,实验证明其在准确性和不确定性估计上均优于单视图模型。

摘要:

能够评估机器学习模型中单个预测的置信度对于决策场景至关重要。特别是在医疗诊断、安全和无人驾驶等关键应用中。近年来,复杂的预测模型在解决困难任务方面取得了巨大成功,每天都有新方法被提出。尽管机器学习模型的大多数新进展集中在提升整体性能上,但在评估单个预测的可信度方面投入的努力较少,在传感器融合的背景下更是如此。为此,我们构建并测试了用于异构传感器融合的多视图和单视图保形模型。由于我们的模型基于保形预测框架,因此它们提供了理论上的边际置信度保证。我们还提出了一种基于集合交集的多视图半保形模型。通过全面的实验,我们表明多视图模型不仅在基于准确性的性能指标上优于单视图模型(正如之前多项工作已经证明的那样),而且在提供不确定性估计的保形度量上也表现更好。我们的结果还表明,与单视图模型相比,多视图模型生成的预测集具有更少的不确定性。

英文摘要:

Being able to assess the confidence of individual predictions in machine learning models is crucial for decision making scenarios. Specially, in critical applications such as medical diagnosis, security, and unmanned vehicles, to name a few. In the last years, complex predictive models have had great success in solving hard tasks and new methods are being proposed every day. While the majority of new developments in machine learning models focus on improving the overall performance, less effort is put on assessing the trustworthiness of individual predictions, and even to a lesser extent, in the context of sensor fusion. To this end, we build and test multi-view and single-view conformal models for heterogeneous sensor fusion. Our models provide theoretical marginal confidence guarantees since they are based on the conformal prediction framework. We also propose a multi-view semi-conformal model based on sets intersection. Through comprehensive experimentation, we show that multi-view models perform better than single-view models not only in terms of accuracy-based performance metrics (as it has already been shown in several previous works) but also in conformal measures that provide uncertainty estimation. Our results also showed that multi-view models generate prediction sets with less uncertainty compared to single-view models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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