Aspect-Based Sentiment Analysis of Specific Targets

Abstract

Different from traditional sentiment analysis tasks, Aspect-Based Sentiment Analysis (ABSA) aims to automatically identify the emotional polarity of different aspects in the same sentence, which helps to mine users' more delicate emotional expressions for different targets and has become a research hotspot in the field of natural language processing in recent years. Thanks to the rapid development of attention-based deep neural network models, the accuracy of aspect sentiment analysis has continuously made breakthroughs. However, existing works pay little attention to the performance bounds of different application scenarios, such as different text topics or text lengths. In response to the above issues, this paper conducts a comparative analysis of several classic end-to-end neural network models to explore topic-level sentiment polarity analysis. By quantitatively evaluating the accuracy and F1 score of each model at different fixed text lengths, this paper summarizes the strengths, weaknesses, and different aspects of each model's efficiency in use. In addition, this paper also discusses the existing problems with these models and puts forward suggestions for improvement, which can provide some new insights into the research of ABSA.