Effective strategies for combining attention mechanism with lstm for aspect-level sentiment classification

Abstract

Aspect-level sentiment classification, as a fine-grained task in sentiment classification, aiming to extract sentiment polarity from opinions towards a specific aspect word, has been made significant improvements in recent years. In this paper, we propose a series of attention strategies and design CAM-LSTM (Combining Attention Mechanism with LSTM) model based on these strategies to improve the aspect-level sentiment classification. Our attention strategies and model can capture the correlations between the aspect words and their context words more accurately by combining more semantic information of aspect words. We conduct experiments on three English datasets. The experimental results have shown that our attention strategies and model can make remarkable improvements and outperform the state-of-the-art baseline models in both datasets.