Songram, P., Khummanee, S., Kawattikul, K. and Muangnak, N. (2026) “Hybrid WangchanBERTa Architectures for Multi-Class Thai Sentiment Analysis”, ECTI Transactions on Computer and Information Technology (ECTI-CIT), 20(2), pp. 233–246. doi: 10.37936/ecti-cit.2026202.264201.