用视觉听觉信息增强大模型情感识别,性能提升超1.8%。
Push the Limit of Multi-modal Emotion Recognition by Prompting LLMs with Receptive-Field-Aware Attention Weighting
- 基于感受野的注意力加权,融合多模态线索优化大模型判断。
- 在IEMOCAP数据集上,6分类任务最高提升1.80%准确率。
- 适合需要高精度情感分析的对话系统与人机交互研究者。
理解对话中的情绪通常需要外部知识来准确把握内容。随着大语言模型能力增强,不应局限于预训练语言模型的有限表现。然而,现有大模型要么仅处理文本,要么处理多媒体信息成本过高。本文提出Lantern框架,通过感知感受野的注意力加权机制,利用大模型与多模态特征的协同优势。该框架训练一个双任务基础模型(vanilla model)输出情感类别概率与维度评分,将这些预测作为参考输入大模型,借助其外部知识和上下文理解能力调整各情感类别的预测概率。对话被划分为多个感受野,每个样本恰好属于t个感受野。最终,大模型的预测结果通过感受野感知的注意力加权模块进行融合。实验中,以CORECT与SDT为基础模型,结合GPT-4或Llama-3.1-405B,在IEMOCAP数据集的4分类与6分类设置下,性能分别提升最高达1.23%与1.80%。
原文摘要 · Abstract (English)
Understanding the emotions in a dialogue usually requires external knowledge to accurately understand the contents. As the LLMs become more and more powerful, we do not want to settle on the limited ability of the pre-trained language model. However, the LLMs either can only process text modality or are too expensive to process the multimedia information. We aim to utilize both the power of LLMs and the supplementary features from the multimedia modalities. In this paper, we present a framework, Lantern, that can improve the performance of a certain vanilla model by prompting large language models with receptive-field-aware attention weighting. This framework trained a multi-task vanilla model to produce probabilities of emotion classes and dimension scores. These predictions are fed into the LLMs as references to adjust the predicted probabilities of each emotion class with its external knowledge and contextual understanding. We slice the dialogue into different receptive fields, and each sample is included in exactly t receptive fields. Finally, the predictions of LLMs are merged with a receptive-field-aware attention-driven weighting module. In the experiments, vanilla models CORECT and SDT are deployed in Lantern with GPT-4 or Llama-3.1-405B. The experiments in IEMOCAP with 4-way and 6-way settings demonstrated that the Lantern can significantly improve the performance of current vanilla models by up to 1.23% and 1.80%.
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