Sapandeep Singh Sandhu, & Amanpreet Kaur Sandhu. (2026). Controlled Emoji Effects in Fine-Grained Tweet Valence: A Multi-Metric Benchmark of Transformer Checkpoints. International Journal of Computer Information Systems and Industrial Management Applications, 18(1s), 9. https://doi.org/10.7091710.70917/ijcisim-2026-1966