Joseph Abiola, O., Olalekan Abiola, T., Pichardo Lagunas, O. and Sidorov, G. (2026) “Hope Speech Detection: A Comparative Study across Four Languages”, International Journal of Combinatorial Optimization Problems and Informatics, 17(2), pp. 215–221. doi: 10.61467/2007.1558.2026.v17i2.1279.