Modeling Contextual Understanding for Conversational Agents Development: A Systematic Review of Recent Advances and Challenges. Nigerian Journal of Technology, [S. l.], v. 44, n. 4, p. 693–722, 2026. DOI: 10.4314/njt.2025.4521. Disponível em: https://nijotech.com/index.php/nijotech/article/view/4521. Acesso em: 16 apr. 2026.