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All Journal Saintika Medika: Jurnal Ilmu Kesehatan dan Kedokteran Keluarga. Jurnal Kedokteran Brawijaya Berkala Kedokteran Jurnal Ilmiah Kedokteran Wijaya Kusuma Majalah Kesehatan FKUB Journal of Information Technology and Computer Science Oceana Biomedicina Journal Majalah Patologi Indonesia Bioscientia Medicina : Journal of Biomedicine and Translational Research Medika Teknika : Jurnal Teknik Elektromedik Indonesia Bioscientia Medicina : Journal of Biomedicine and Translational Research Malang Respiratory Journal Jurnal Klinik dan Riset Kesehatan Journal of General Procedural Dermatology and Venereology Indonesia Jurnal Ners dan Kebidanan (Journal of Ners and Midwifery)
Retnani, Diah Prabawati
Department Of Pathological Anatomy, Faculty Of Medicine, Universitas Brawijaya, Malang, Indonesia
Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Dentistry Education Electrical & Electronics Engineering Engineering Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience Nursing Public Health Other

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Journal : Journal of Information Technology and Computer Science

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An Expert System for Early Risk Diagnosis of Breast Cancer Using Fuzzy Mamdani and Case-Based Reasoning Rumahorbo, Cicilia Angelica; Arief Andy Soebroto; Putra Pandu Adikara; Diah Prabawati Retnani
Journal of Information Technology and Computer Science Vol. 10 No. 3: Desember 2025
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.2025103854

Abstract

Breast cancer remains one of the leading causes of morbidity and mortality among women worldwide, making early detection essential to improve treatment outcomes. However, early-stage breast cancer symptoms are often subjective and non-specific, which complicates initial risk assessment. This study proposes an expert system for early breast cancer risk diagnosis by integrating Fuzzy Mamdani and Case-Based Reasoning (CBR). The Fuzzy Mamdani method is employed as the primary inference mechanism to model uncertainty in symptoms and risk factors using linguistic rules, while CBR is utilized as a decision support component by leveraging similarities with previously validated clinical cases. The dataset consists of 150 patient records, of which 123 cases are used as the case base and 27 cases are employed for system evaluation. Experimental results show that the proposed system achieves an accuracy of 92.59% compared to expert judgments. These findings indicate that the integration of Fuzzy Mamdani and Case-Based Reasoning provides an interpretable and adaptive approach for early breast cancer risk assessment and has potential as a screening support tool.  
Co-Authors Aina Angelina Amelinda Natania Nurasih Andreas Putra Christiawan Purba Andri Andri Anggie Sasmita Kharisma Putri Anggun Putri Yuniaswan Anugrah Putri, Deka Miftalia Aprilia, Andrea Arief Andy Soebroto Arif Widiatmoko Ariyanta Dafa Diputra Barasabha, Thareq Berlian Anggraeni Putri Boco Pranowo, Tri Pradesa Christiawan Purba, Andreas Putra Dani, Adinda Amalia Dewi, Rose Khasana Diah Prabawati Diputra, Ariyanta Dafa Djajalaksana, Susanthy Djanggan Sargowo Dwi Hadi Sulistyarini Dwi Jayasa, Pande Made DYAH FAUZIAH, DYAH Eka Agustina, Dwi Rosa Ekasari, Dhany Prafita Erawati, Dini Rachma Erawati, Rachma Dini Ervina, Rita Eviana Norahmawati Eviana Norahmawati Fadli, Muhammad Luqman Fitria Mayasari Hamka Muhammad Nasir Laitupa Hanggara, Dian Sukma Hardika, Arif Satria hardiyanto, frenky Harun Al Rasyid Harun Al Rasyid Harun Al Rasyid Hendy Setyo Yudhanto Herman Saputra hermanto, djoko heri Herwinda Brahmanti Hery Susilo Hidayat Sujuti Holipah Holipah Ihda Dian Kusuma Ihda Dian Kusuma Indrastuti Normahayu, Indrastuti Isharanto, Artono Karyono Mintaroem Kenty Wantri Anita Kenty Wantri Anita, Kenty Wantri Larasaty, Nanda Shaskia Lilasari, Sekar Puspita Lita Setyowatie Lita setyowatie Lita Setyowatie, Lita Lucky Pratama Muhammad Agung Putra Yudha Nurasih, Amelinda Natania Okta, Shinta Pande Made Dwi Jayasa Parsama Putra, Ngakan Putu Pinahayu, Griesinta Trianty Andria Prasetya, Fahmi Adhi Pratiwi, Suryanti Dwi Prawitasari, Suci Pudjo, Herwindo Putra Pandu Adikara Putra Yudha, Muhammad Agung Putri Rachma Safitri Putri, Anggie Sasmita Kharisma Putri, Berlian Anggraeni RA Rose Khasana Dewi Rachmad Sarwo Bekti Rahmadiani, Nayla Rahmawati, Yustian Devika Rumahorbo, Cicilia Angelica Safitri, Putri Rachma Setiyaningsih, Fera Yuli Shinta Oktya Wardhani, Shinta Oktya Sugiatno, Belladikna Brillianty Susilo, Hery Tazakka, Achmad Aidil Thareq Barasabha Widiatmoko, Arif Widiatmoko, Arif Yosephine, Septina Yudanto, Hendy Setyo Yudhanto, Hendy Setyo Yulian, Inneke Yuniasih, Dwi Intan Yuniaswan, Anggun Putri Yustian Devika Rahmawati