arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2406.04802cs.CVcs.LG
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预测性动态融合

Predictive Dynamic Fusion

College of Intelligence and Computing, Tianjin University(天津大学智能与计算学部);Tianjin Key Lab of Machine Learning(天津市机器学习重点实验室)

Bing Cao, Yinan Xia, Yi Ding, Changqing Zhang, Qinghua Hu

AI总结:

针对动态多模态融合缺乏理论保证的问题,提出预测性动态融合框架,从泛化角度推导可预测协作信念并降低误差上界,经实验验证其优越性。

摘要:

多模态融合在联合决策系统中对于形成整体判断至关重要。由于开放环境中多模态数据的变化,动态融合应运而生,并在众多应用中取得了显著进展。然而,现有的大多数动态多模态融合方法缺乏理论保证,容易陷入次优问题,导致不可靠和不稳定。为解决这一问题,我们提出了一个用于多模态学习的预测性动态融合(PDF)框架。我们从泛化角度揭示多模态融合,并从理论上推导出具有单一置信度和整体置信度的可预测协作信念(Co-Belief),该信念可证明地降低了泛化误差的上界。据此,我们进一步提出了一种相对校准策略,以校准预测的Co-Belief,应对潜在的不确定性。在多个基准上的大量实验证实了我们的优越性。我们的代码可在 https://github.com/Yinan-Xia/PDF 获取。

英文摘要:

Multimodal fusion is crucial in joint decision-making systems for rendering holistic judgments. Since multimodal data changes in open environments, dynamic fusion has emerged and achieved remarkable progress in numerous applications. However, most existing dynamic multimodal fusion methods lack theoretical guarantees and easily fall into suboptimal problems, yielding unreliability and instability. To address this issue, we propose a Predictive Dynamic Fusion (PDF) framework for multimodal learning. We proceed to reveal the multimodal fusion from a generalization perspective and theoretically derive the predictable Collaborative Belief (Co-Belief) with Mono- and Holo-Confidence, which provably reduces the upper bound of generalization error. Accordingly, we further propose a relative calibration strategy to calibrate the predicted Co-Belief for potential uncertainty. Extensive experiments on multiple benchmarks confirm our superiority. Our code is available at https://github.com/Yinan-Xia/PDF.

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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