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arXiv 2405.12752cs.CV
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C3L:通过对比学习生成内容相关的视觉-语言指令微调数据

C3L: Content Correlated Vision-Language Instruction Tuning Data Generation via Contrastive Learning

School of Computer Science, Northwestern Polytechnical University(西北工业大学计算机学院);Ningbo Institute, Northwestern Polytechnical University(西北工业大学宁波研究院);National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean(空天地一体化综合业务网国家工程实验室)

Ji Ma, Wei Suo, Peng Wang, Yanning Zhang

AI总结:

针对LVLMs生成VLIT数据时图文相关性低及额外训练导致暴露偏差的问题,本文提出C3L,通过S(I2C)内容相关性模块与对比学习提升数据生成质量,并在四个基准上验证有效。

摘要:

视觉-语言指令微调(VLIT)是大型视觉-语言模型(LVLMs)的关键训练阶段。随着开源LVLMs能力不断提升,研究人员越来越多地转向利用开源LVLMs生成VLIT数据,并取得了显著进展。然而,此类数据生成方法受到以下挑战的瓶颈制约:1)由于多模态模型往往会受到先验语言知识的影响,直接使用LVLMs生成VLIT数据将不可避免地导致生成数据与图像之间的内容相关性较低。2)为提升模型生成VLIT数据的能力,以往方法引入额外训练阶段来增强生成能力。这一过程会损害模型对未见过输入的泛化能力(即“暴露偏差”问题)。本文提出一种通过对比学习实现的新型内容相关VLIT数据生成方法(C3L)。具体而言,我们设计了新的内容相关性模块,通过计算图像-指令对应分数S(I2C)来增强VLIT数据与图像之间的内容相关性。此外,引入对比学习模块以进一步提升LVLMs的VLIT数据生成能力。在四个基准上进行的大量自动评估表明了本文方法的有效性。

英文摘要:

Vision-Language Instruction Tuning (VLIT) is a critical training phase for Large Vision-Language Models (LVLMs). With the improving capabilities of open-source LVLMs, researchers have increasingly turned to generate VLIT data by using open-source LVLMs and achieved significant progress. However, such data generation approaches are bottlenecked by the following challenges: 1) Since multi-modal models tend to be influenced by prior language knowledge, directly using LVLMs to generate VLIT data would inevitably lead to low content relevance between generated data and images. 2) To improve the ability of the models to generate VLIT data, previous methods have incorporated an additional training phase to boost the generative capacity. This process hurts the generalization of the models to unseen inputs (i.e., "exposure bias" problem). In this paper, we propose a new Content Correlated VLIT data generation via Contrastive Learning (C3L). Specifically, we design a new content relevance module which enhances the content relevance between VLIT data and images by computing Image Instruction Correspondence Scores S(I2C). Moreover, a contrastive learning module is introduced to further boost the VLIT data generation capability of the LVLMs. A large number of automatic measures on four benchmarks show the effectiveness of our method.

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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