F. Ratnawati, N. Hardinata, and Supendi, “This study developed a Certainty Factor (CF)–based expert system to support nutrition consultation and stunting prevention in coastal settings using Bengkalis Regency as a case study. A design science approach was employed to analyze local service constra”, JTOS, vol. 8, no. 2, pp. 530 - 539, Oct. 2025.