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arXiv 2408.09798cs.LG
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通过对抗提示增强以文本为中心的多模态对齐中的模态鲁棒性

Enhance Modality Robustness in Text-Centric Multimodal Alignment with Adversarial Prompting

National Taiwan University(台湾大学)

Yun-Da Tsai, Ting-Yu Yen, Keng-Te Liao, Shou-De Lin

AI总结:

针对现有以文本为中心的多模态对齐方法鲁棒性不足的问题,提出一种对抗训练方法,在噪声、顺序置换、模态缺失场景下鲁棒性优于传统方法与预训练多模态基础模型。

摘要:

将不同模态转换为通用文本,再将其作为大语言模型(LLM)的输入提示,是多模态模型对齐的常用方法,尤其在成对数据有限时更为适用。以文本为中心的对齐方法利用文本作为模态空间的独特属性,将多样化输入转换为统一的文本表示,从而使下游模型能够有效解读各类模态输入。本研究评估了多模态表示在噪声缺陷、动态输入顺序置换和模态缺失情况下的质量与鲁棒性,发现当前以文本为中心的对齐方法会损害下游鲁棒性。为解决这一问题,我们提出了一种新的以文本为中心的对抗训练方法,与传统鲁棒训练方法和预训练多模态基础模型相比,该方法显著提升了鲁棒性。我们的研究结果凸显了该方法在提升多模态表示的鲁棒性与适应性方面的潜力,为动态现实场景应用提供了有前景的解决方案。

英文摘要:

Converting different modalities into generalized text, which then serves as input prompts for large language models (LLMs), is a common approach for aligning multimodal models, particularly when pairwise data is limited. Text-centric alignment method leverages the unique properties of text as a modality space, transforming diverse inputs into a unified textual representation, thereby enabling downstream models to effectively interpret various modal inputs. This study evaluates the quality and robustness of multimodal representations in the face of noise imperfections, dynamic input order permutations, and missing modalities, revealing that current text-centric alignment methods can compromise downstream robustness. To address this issue, we propose a new text-centric adversarial training approach that significantly enhances robustness compared to traditional robust training methods and pre-trained multimodal foundation models. Our findings underscore the potential of this approach to improve the robustness and adaptability of multimodal representations, offering a promising solution for dynamic and real-world applications.

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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