sEntIMeldCL: Enhancing explicit knowledge via Uniform-based Implicit Contrastive Mechanism for Aspect-Level Sentiment Analysis

Khwaja Mutahir Ahmad, Qiao Liu, Abdullah Aman Khan, Renning Pang, Tingting Dai, Yanglei Gan

Abstract: Highlights•Captures implicit sentiments often neglects semantic representation by traditional models.•Explicit representation directly connected with the implicit sentiment expressions.•We proposed sEntIMeldCL-ALSA to bridge the gap between explicit and implicit representations.•Aspect-specific adapter isolates aspect-specific terms for explicit representation.•Uniform-based augmentation generates sentimental implicit data representations.•ExImp contrastive module further refines the model’s sentiment differentiation.•Parameter-efficient tuning mechanism utilize to fine-tune the data generation.