Identifying Student Interests in the Vocational Field Using the Certainty Factor Method

  • Poppy Puspita STMIK Kaputama
  • Ramadani Ramadani STMIK Kaputama Binjai
  • Juliana Naftali Sitompul STMIK Kaputama Binjai


SMK Negeri 1 Kota Binjai is a vocational high school that has several competency skills majors. This school has an interest in applicants who are quite interested every year, the number of applicants in admitting new students every year continues to increase from year to year. Vocational education is an educational model that focuses on individual skills, skills, work habits, and appreciation of the jobs needed by people in the business/industry world. Lack of information about talent interests and career paths or vocational education greatly affects students in making choices regarding majors. Many students who choose majors are not interested in their talents and other reasons. This can make students wrong in taking a major which causes inadequate competence of students in completing their education and will certainly affect the future of these students. expert system which is a computer program, which is able to store knowledge and rules like an expert. With the existence of an expert system, each student is able to identify and find out what areas of expertise he is interested in. The Certainty Factor method is a method for proving whether a fact is certain or uncertain in the form of a metric which is usually used in expert systems. From the results of trials conducted by the expert system to identify students' interest in the vocational field using the Certainty Factor method, the highest score is majors Online Business and Marketing with a confidence value of 89.67%.


[1] J. Parhusip, VH Pranatawijaya, DP (2012). Expert System for Diagnosing Heart Disease Using the Web-Based Certainty Factor Method. SemnasIF, Yogyakarta.
[2] Jeremias Febronius Bere, Joseph Dedy Irawan, FXA (2019). Expert System for Diagnosing Diseases in Chickens Using the Certainty Factor Method. Realtech Scientific Journal, 15(1), 13–18.
[3] Maulina, Dina, AMW (2020). The Certainty Factor Method in the Application of an Expert System for Diagnosing Children's Diseases. Journal of Information System Management (JOISM), 2(1), 23–32.
[4] Fahindra, AR, Husni, I., & Amin, A. (2019). Expert System for Early Detection of Covid-19 Using the Certainty Factor Method. 15(1), 92–103.
[6] Nurazizah, L., & Simanjuntak, M. (2022). Expert System for Determining Drugs in Diabetics Using the Certainty Factor Method. 6(3).
[7] Novita, R., Azis, S., Science, F., & Engineering, F. (2018). Expert System for Determining Student Interests in the Vocational Field. National Seminar on Information Communication Technology and Industry, November, 1–9.
[8] Sucipto, A., Fernando, Y., Borman, RI, & Mahmuda, N. (2019). Application of the Certainty Factor Method in the Diagnosis of Spinal Nerve Diseases. FIFO Scientific Journal, 10(2), 18.
How to Cite
PUSPITA, Poppy; RAMADANI, Ramadani; SITOMPUL, Juliana Naftali. Identifying Student Interests in the Vocational Field Using the Certainty Factor Method. International Journal of Informatics, Economics, Management and Science (IJIEMS), [S.l.], v. 2, n. 2, p. 121-129, aug. 2023. ISSN 2809-8471. Available at: <>. Date accessed: 15 july 2024. doi:

Most read articles by the same author(s)

Obs.: This plugin requires at least one statistics/report plugin to be enabled. If your statistics plugins provide more than one metric then please also select a main metric on the admin's site settings page and/or on the journal manager's settings pages.