arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2503.13847cs.CVcs.AI

利用混合马尔可夫逻辑解耦视觉描述中的微调与预训练

Disentangling Fine-Tuning from Pre-Training in Visual Captioning with Hybrid Markov Logic

University of Memphis(孟菲斯大学);Adobe Research(奥多比研究院)

Monika Shah, Somdeb Sarkhel, Deepak Venugopal

AI总结:

本文提出基于 HMLN 的概率建模与推理方法,用于量化训练样本对生成描述的影响,并在 MSCOCO 上揭示使用 LLM 的 BLIP2 受微调影响更小。

摘要:

多模态系统具有高度复杂的处理流程,并先在大规模数据集上进行预训练,随后再针对视觉描述等特定任务进行微调。然而,由于模型已经通过预训练掌握了相关知识,因此很难区分它在微调过程中学到了什么,以及哪些内容是其原本就已知的。在本研究中,我们利用混合马尔可夫逻辑网络(Hybrid Markov Logic Networks,HMLNs),通过将符号知识(从描述中提取)与视觉特征(从图像中提取)相关联,在训练样本上学习一个概率模型。对于生成的描述,我们基于 HMLN 分布并使用概率推理来量化训练样本的影响。我们在 MSCOCO 数据集上针对不同类型的描述模型评估了两类推理过程。结果表明,对于 BLIP2(一种使用 LLM 的模型),微调对模型已获得知识的影响可能较小,因为与不使用 LLM 的模型相比,BLIP2 可能拥有更多用于执行视觉描述的通用知识。

英文摘要:

Multimodal systems have highly complex processing pipelines and are pretrained over large datasets before being fine-tuned for specific tasks such as visual captioning. However, it becomes hard to disentangle what the model learns during the fine-tuning process from what it already knows due to its pretraining. In this work, we learn a probabilistic model using Hybrid Markov Logic Networks (HMLNs) over the training examples by relating symbolic knowledge (extracted from the caption) with visual features (extracted from the image). For a generated caption, we quantify the influence of training examples based on the HMLN distribution using probabilistic inference. We evaluate two types of inference procedures on the MSCOCO dataset for different types of captioning models. Our results show that for BLIP2 (a model that uses a LLM), the fine-tuning may have smaller influence on the knowledge the model has acquired since it may have more general knowledge to perform visual captioning as compared to models that do not use a LLM

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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