  Large Language Models (LLMs) have made significant strides in both scientific
research and practical applications. Existing studies have demonstrated the
state-of-the-art (SOTA) performance of LLMs in various natural language
processing tasks. However, the question of how to further enhance LLMs'
performance in specific task using prompting strategies remains a pivotal
concern. This paper explores the enhancement of LLMs' performance in sentiment
analysis through the application of prompting strategies. We formulate the
process of prompting for sentiment analysis tasks and introduce two novel
strategies tailored for sentiment analysis: RolePlaying (RP) prompting and
Chain-of-thought (CoT) prompting. Specifically, we also propose the RP-CoT
prompting strategy which is a combination of RP prompting and CoT prompting. We
conduct comparative experiments on three distinct domain datasets to evaluate
the effectiveness of the proposed sentiment analysis strategies. The results
demonstrate that the adoption of the proposed prompting strategies leads to a
increasing enhancement in sentiment analysis accuracy. Further, the CoT
prompting strategy exhibits a notable impact on implicit sentiment analysis,
with the RP-CoT prompting strategy delivering the most superior performance
among all strategies.
