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Novi Yanti
Universitas Islam Negeri Sultan Syarif Kasim Riau
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Journal : Scientific Journal of Informatics

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Comparative Analysis: Accuracy of Certainty Factor and Dempster Shafer Methods in Expert Systems for Tropical Disease Diagnosis Yanti, Novi; Insani, Fitri; Okfalisa, Okfalisa; Zain, Ruri Hartika; Setiawan, Adil
Scientific Journal of Informatics Vol. 12 No. 3: August 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v12i3.28047

Abstract

Purpose: This study aims to diagnose Neglected Tropical Diseases early by applying the concept of an expert system as a tool that works by mimicking the thought patterns of an expert (doctor). The methods applied in this expert system are Certainty Factor and Dempster Shafer. Both methods work by combining a number of pieces of evidence (symptoms) to produce a confidence value for a disease. Methods: The study began with discussions and interviews with experts to collect information and data about Neglected Tropical Diseases. Conducting a literature review study to enrich knowledge about Neglected Tropical Diseases. Two main inference methods are used to detect diseases based on patient symptoms. The Certainty Factor method uses expert value weighting parameters and patient input value weighting as a basis for knowledge. The Dempster Shafer method only uses expert value weighting in analyzing the probability of symptoms to produce a level of diagnostic accuracy. Result: The Certainty Factor method works by integrating patient and expert weight values into its calculations. Meanwhile, the Dempster Shafer method considers expert weight values without involving patient weight values. Expert system searches using the Forward Chaining inference engine show that the Certainty Factor method has an accuracy probability value of up to 90%. Meanwhile, the Dempster Shafer method has an accuracy value of 70%. Novelty: The results of the study show that expert systems can be applied in the health sector, especially in diagnosing Neglected Tropical Diseases. Of the two methods used, the Certainty Factor method shows a high accuracy value, so it can help detect Neglected Tropical Diseases early and provide treatment solutions to improve health.
Co-Authors Afriani, Defi Afrida, Elly Agus Sutarjo Ahmad Atiq Ahmad Fudholi Albis Ya Albi Alinur, Alinur Alwan Alwan Amalia, Intan Rahma Andika Triansyah Apriani, Riza Aprilia Apriliani, Firda Apriwandi Apriwandi . Arif Pratama Budiman Astri Senania, Astri Awaludin Martin Bafadal, M Fachrurrozi Beddu, Muhammad Juni Budi Setiawan Cai Cen, Cia Chitraningrum, Nidya Dalimunte, Nurul Devy Putri Milanda Diah Yudhawati Eka Pandu Cynthia Eka Supriatna Elli Afrida Elvia Budianita Erman Taer Fairuzy, Zeeva Khalilah Farida Ariani Fauziah, Nenden febriyanti, utari Firdaus, Windra Fitri Insani Fitri Insani Fitri Insani fitri, irsadul Fitria, Anif Halawa, Alkisah Ikhlas Hamdani Hamdani Handayani, Niknik Hasbi Hazazi, Rizki Helman Helman, Helman Helmi, Lika Akana Hetty Elfina Hidayat, Ikhwan Mahfud Hura, Periaman Hutauruk, Martinus Robert Huvat, Albuinuslinus Iriansyah, Deril Ita, Jefita Ivo Dwi Ananda Julfina Juliansyah, Muhamad Ednis Julnaidi, Julnaidi Khoirul Anwar Kholilullah, Muhammad Khumairah, Zahra laelly, tazkia aisha Laia, Firman Daris Lodzviana Saputri, Eka Lola Oktavia Mahfud Hidayat, Ikhwan Maliza, Nofia Margaret Stevani Marliana Safitri Martin Kustati Martinus Robert H MAS'ARI, AHMAD Miftahul Ghifrah Sembiring Milanda, Devy Putri Muhammad Affandes Muhammad Irsyad Muhammad Irsyad MUHAMMAD YUSUF Muharram, Rahma Mekar Nadila, Andieni Delia Nadila2 Delia Naima, Shafira Salsa Nasriah Nasriah Nazruddin Safaat H Nurhafifah Nurmaida, Arrita Nursyafni, Nursyafni Nursyaputri, Wan Mery Okfalisa Okfalisa Pambudi, Puguh Pardede, Pantas Pangondian Pizaini Pizaini Putri, Bunga Ludmila Rendrar Putri, Rahma Lia Rahmad Kurniawan Ramadani, Jasmine Aura Rambe, Saima Reflianto, Reflianto Renea Shinta Aminda Reski Mai Candra Rice Haryati Rifa'i, Muhammad Ahsin Rika Taslim roky_yonatan Ruri Hartika Zain Rusdi, Heriandi Salim, Umar Hi santa, santa ompusunggu Saputra, Tommy Sarjon Defit Sauri, Muhammad Sopian Septian, Agil Setiawan, Adil Setiawan, Adil setiawati, erni Shabila, Miranda Sibuea, Nurhalimah Silalahi, Alistraja Dison Siti Rohmah Sriyanto, Darmawan Sulistyarini, Sulistyarini Sumiarti, Imas Suryani Suryani Susiani, Rini Syafarudin, Muhammad Arif Syamsurizal - - Tampubolon, Manner Teja Rinanda Teti Chandrayanti Thomy Sastra Atmaja TITIN SUNARYATI Wandi, Joni Indra Widi Astuti Widiyanti , Indri Yelvi Fitriani Yelvi Fitriani YULIA SYAFITRI Yunan, Nadiya Yunan, Nadya Yuningsih, Isma Aulia Yusra, Yusra