https://cis.temple.edu/~jiewu/research/publications/Publication_files/WENJUNJIANG2021TWeb.pdf
The performance of Sim-Sa-Lead-3 (row 6) is even better than that of Sim-Lead-3, e.g., Rouge-1 in RottenTomatoes improves by 3%. This indicates that the sentiment polarities are able to improve the performance.