SAM: A Self-adaptive Attention Module for Context-Aware Recommendation System
This addresses bias issues in context-aware recommendation systems, though it appears incremental as an enhancement module.
The paper tackles selection bias in recommendation systems that use textual information by proposing a Self-adaptive Attention Module (SAM) that adjusts bias through contextual information, and experiments on three real-world datasets show SAM significantly improves state-of-the-art models.
Recently, textual information has been proved to play a positive role in recommendation systems. However, most of the existing methods only focus on representation learning of textual information in ratings, while potential selection bias induced by the textual information is ignored. In this work, we propose a novel and general self-adaptive module, the Self-adaptive Attention Module (SAM), which adjusts the selection bias by capturing contextual information based on its representation. This module can be embedded into recommendation systems that contain learning components of contextual information. Experimental results on three real-world datasets demonstrate the effectiveness of our proposal, and the state-of-the-art models with SAM significantly outperform the original ones.