Hafeez, F., Hafeez, M., Shaff Bin Imran, M., Qasim, A., Hussain, N., Ahmad, F. and Sidorov, G. 2026. A Comparative Study of Deep Learning and Transformer Models for Twitter Sentiment Analysis. International Journal of Combinatorial Optimization Problems and Informatics. 17, 1 (Jan. 2026), 85–89. DOI:https://doi.org/10.61467/2007.1558.2026.v17i1.1241.