DWE+: Dual-Way Matching Enhanced Framework for Multimodal Entity Linking
作者: Shezheng Song, Shasha Li, Shan Zhao, Xiaopeng Li, Chengyu Wang, Jie Yu, Jun Ma, Tianwei Yan, Bin Ji, Xiaoguang Mao
分类: cs.AI, cs.CL, cs.CV
发布日期: 2024-04-07
备注: under review on TOIS. arXiv admin note: substantial text overlap with arXiv:2312.11816
🔗 代码/项目: GITHUB
💡 一句话要点
提出DWE+框架以解决多模态实体链接中的语义一致性问题
🎯 匹配领域: 支柱二:RL算法与架构 (RL & Architecture) 支柱九:具身大模型 (Embodied Foundation Models)
关键词: 多模态实体链接 细粒度特征提取 视觉属性增强 动态语义丰富 层次对比学习
📋 核心要点
- 现有多模态实体链接方法存在冗余信息处理不足、实体相关信息利用不充分及语义不一致等挑战。
- DWE+通过细粒度图像特征提取、视觉属性增强和动态语义丰富等方法,提升了多模态信息的利用效率。
- 在多个数据集上,DWE+实现了最先进的性能,显著提高了多模态实体链接的准确性。
📝 摘要(中文)
多模态实体链接(MEL)旨在利用文本和视觉信息将模糊提及链接到知识库中的明确实体。当前方法面临几个主要问题:一是将整个图像作为输入可能包含冗余信息;二是对实体相关信息(如图像中的属性)利用不足;三是知识库中实体与其表示之间的语义不一致。为此,本文提出DWE+框架,通过引入细粒度图像特征提取、视觉属性增强和动态语义丰富等方法,提升MEL的性能。实验结果表明,DWE+在Wikimel、Richpedia和Wikidiverse数据集上表现优异,达到了最先进的性能。
🔬 方法详解
问题定义:本文解决多模态实体链接中的语义一致性和信息冗余问题。现有方法往往将整个图像作为输入,导致冗余信息干扰,同时对实体相关信息的利用不足,造成语义不一致。
核心思路:DWE+框架通过细分图像信息,提取更精细的语义特征,并动态维护与知识库中实体的语义一致性,从而提升多模态实体链接的效果。
技术框架:DWE+的整体架构包括三个主要模块:细粒度图像特征提取、视觉属性增强和动态语义丰富。首先,将图像划分为多个局部对象以提取细粒度特征;其次,从图像中提取视觉属性以增强特征融合;最后,利用维基百科和ChatGPT进行动态语义捕捉。
关键创新:DWE+的核心创新在于引入细粒度图像特征提取和动态语义丰富机制,显著改善了现有方法在处理冗余信息和语义一致性方面的不足。
关键设计:在细粒度特征提取中,采用层次对比学习方法对粗粒度信息(文本和图像)与细粒度信息(提及和视觉对象)进行对齐;在视觉属性提取中,关注面部特征和身份信息的融合;损失函数设计上,结合了多种损失以优化模型性能。
🖼️ 关键图片
📊 实验亮点
在Wikimel、Richpedia和Wikidiverse数据集上的实验结果显示,DWE+框架显著提升了多模态实体链接的性能,达到了最先进的水平,具体提升幅度未知,且优化后的数据集代码已公开,便于后续研究者使用。
🎯 应用场景
DWE+框架在多模态实体链接领域具有广泛的应用潜力,特别是在信息检索、智能问答和社交媒体分析等场景中。通过提升实体链接的准确性,该研究能够为用户提供更精准的信息服务,促进人机交互的智能化发展。
📄 摘要(原文)
Multimodal entity linking (MEL) aims to utilize multimodal information (usually textual and visual information) to link ambiguous mentions to unambiguous entities in knowledge base. Current methods facing main issues: (1)treating the entire image as input may contain redundant information. (2)the insufficient utilization of entity-related information, such as attributes in images. (3)semantic inconsistency between the entity in knowledge base and its representation. To this end, we propose DWE+ for multimodal entity linking. DWE+ could capture finer semantics and dynamically maintain semantic consistency with entities. This is achieved by three aspects: (a)we introduce a method for extracting fine-grained image features by partitioning the image into multiple local objects. Then, hierarchical contrastive learning is used to further align semantics between coarse-grained information(text and image) and fine-grained (mention and visual objects). (b)we explore ways to extract visual attributes from images to enhance fusion feature such as facial features and identity. (c)we leverage Wikipedia and ChatGPT to capture the entity representation, achieving semantic enrichment from both static and dynamic perspectives, which better reflects the real-world entity semantics. Experiments on Wikimel, Richpedia, and Wikidiverse datasets demonstrate the effectiveness of DWE+ in improving MEL performance. Specifically, we optimize these datasets and achieve state-of-the-art performance on the enhanced datasets. The code and enhanced datasets are released on https://github.com/season1blue/DWET