Supervised Adversarial Contrastive Learning for Emotion Recognition in Conversations

Abstract

Extracting generalized and robust representations is a major challenge in emotion recognition in conversations (ERC).To address this, we propose a supervised adversarial contrastive learning (SACL) framework for learning classspread structured representations in a supervised manner.SACL applies contrast-aware adversarial training to generate worst-case samples and uses joint class-spread contrastive learning to extract structured representations.It can effectively utilize label-level feature consistency and retain fine-grained intra-class features.To avoid the negative impact of adversarial perturbations on context-dependent data, we design a contextual adversarial training (CAT) strategy to learn more diverse features from context and enhance the model's context robustness.Under the framework with CAT, we develop a sequence-based SACL-LSTM to learn label-consistent and context-robust features for ERC.Experiments on three datasets show that SACL-LSTM achieves state-of-the-art performance on ERC.Extended experiments prove the effectiveness of SACL and CAT.

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