Sapandeep Singh Sandhu and 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 (Jun. 2026), 9. DOI:https://doi.org/10.7091710.70917/ijcisim-2026-1966.