Implicit Sentiment Analysis Based on Chain of Thought Prompting
This work addresses implicit sentiment analysis in NLP, an incremental advancement using CoT prompting for better performance on specific datasets.
The paper tackles implicit sentiment analysis by introducing a Sentiment Analysis of Thinking (SAoT) framework based on Chain of Thought prompting, achieving F1 scores of 75.27 on restaurant reviews and 76.50 on laptop reviews with improvements over a baseline by an average of 47.99%.
Implicit Sentiment Analysis (ISA) is a crucial research area in natural language processing. Inspired by the idea of large language model Chain of Thought (CoT), this paper introduces a Sentiment Analysis of Thinking (SAoT) framework. The framework first analyzes the implicit aspects and opinions in the text using common sense and thinking chain capabilities. Then, it reflects on the process of implicit sentiment analysis and finally deduces the polarity of sentiment. The model is evaluated on the SemEval 2014 dataset, consisting of 1120 restaurant reviews and 638 laptop reviews. The experimental results demonstrate that the utilization of the ERNIE-Bot-4+SAoT model yields a notable performance improvement. Specifically, on the restaurant dataset, the F1 score reaches 75.27, accompanied by an ISA score of 66.29. Similarly, on the computer dataset, the F1 score achieves 76.50, while the ISA score amounts to 73.46. Comparatively, the ERNIE-Bot-4+SAoT model surpasses the BERTAsp + SCAPt baseline by an average margin of 47.99%.