Ratnawati, F., Hardinata, N., & Supendi. (2025). 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. JURNAL TEKNOLOGI DAN OPEN SOURCE, 8(2), 530 - 539. https://doi.org/10.36378/jtos.v8i2.4858