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All Journal Sodality: Jurnal Sosiologi Pedesaan Sosiohumaniora Dentika Dental Journal ARABIYAT Biomedika Jurnal Sosiologi Pendidikan Humanis Jurnal Kedokteran Gigi Universitas Padjadjaran Padjadjaran Journal of Dentistry UMBARA Indonesian Journal of Anthropology AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Jurnal Noken: Ilmu-Ilmu Sosial Ganaya: Jurnal Ilmu Sosial dan Humaniora NUR EL-ISLAM : Jurnal Pendidikan dan Sosial Keagamaan Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL GOVERNANSI QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Kumawula: Jurnal Pengabdian Kepada Masyarakat Cyber Security dan Forensik Digital (CSFD) Responsive: Jurnal Pemikiran dan Penelitian Administrasi, Sosial, Humaniora dan Kebijakan Publik Didaktika Religia Proceeding ISETH (International Summit on Science, Technology, and Humanity) Prosiding University Research Colloquium Jurnal Riset Mahasiswa Matematika DUNIA KEPERAWATAN: JURNAL KEPERAWATAN DAN KESEHATAN Eduvest - Journal of Universal Studies
Erna Herawati, Erna
Unknown Affiliation
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Other

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Journal : Jurnal Riset Mahasiswa Matematika

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Penanganan Data Imbalanced untuk Klasifikasi Diagnosis Hipertensi dengan Tomek Links pada Regresi Logistik Fachreza, Putri Aulia; Karisma, Ria Dhea Layla Nur; Herawati, Erna
Jurnal Riset Mahasiswa Matematika Vol 4, No 5 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i5.34567

Abstract

Masalah imbalanced data seringkali menghambat akurasi dalam proses klasifikasi, terutama dalam kasus diagnosis hipertensi, di mana jumlah kelas minoritas jauh lebih sedikit dibandingkan kelas mayoritas. Penelitian ini bertujuan untuk membangun model regresi logistik yang akurat dengan mengatasi ketidakseimbangan data menggunakan metode Tomek Links. Metode ini bekerja dengan menghapus pasangan data terdekat dari kelas berbeda untuk mereduksi noise dan memperbaiki distribusi data. Setelah dilakukan undersampling dengan Tomek Links, model regresi logistik dibentuk dengan pendekatan Maximum Likelihood Estimation melalui metode iteratif Newton-Raphson. Evaluasi model dilakukan melalui pengujian multikolinearitas, uji signifikansi parameter, uji kesesuaian model, dan pengukuran ketepatan klasifikasi berdasarkan nilai Apparent Error Rate (APER). Hasil penelitian menunjukkan bahwa variabel jenis kelamin, konsumsi gula berlebih, lemak berlebih, dan usia secara signifikan mempengaruhi kemungkinan seseorang menderita hipertensi. Model akhir menghasilkan tingkat akurasi sebesar 89,5%. Penelitian ini menunjukkan bahwa kombinasi metode Tomek Links dan regresi logistik dapat menjadi pendekatan efektif dalam menangani imbalanced data pada diagnosa hipertensi.
Pemodelan ARDL Pengaruh Ekspor- Impor terhadap Inflasi di Jawa Timur Mardaningrum, Reta Wanda; Harini, Sri; Herawati, Erna
Jurnal Riset Mahasiswa Matematika Vol 4, No 3 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i3.31209

Abstract

The Autoregressive Distributed Lag (ARDL) approach is a time series analysis method that enables the examination of short- and long-term relationships between variables, even when the variables have different levels of stationarity. This study aims to analyze the influence of export and import values on inflation in East Java using standardized monthly data from the Central Bureau of Statistics (BPS) East Java, covering the 2018–2023 period. The selected ARDL model revealed cointegration, indicating significant long-term relationships among the variables. The best model was identified with an F-statistic value of 6.4036, an R-squared value of 0.8163, and the lowest Akaike Information Criterion (AIC). The results demonstrate that export activities, particularly non-oil and gas exports, tend to suppress inflation in the long term, while oil and gas imports exhibit a strong positive influence on inflation. Standardized data were used in this analysis to ensure consistent representation of relationships among.
Penerapan Kriptosistem Niederreiter Menggunakan Kode Goppa Biner untuk Mendukung Keamanan Data dalam Sistem Kriptografi Modern Chusnia, Aldina Laili; Khudzaifah, Muhammad; Herawati, Erna
Jurnal Riset Mahasiswa Matematika Vol 4, No 3 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i3.31216

Abstract

The advancement of modern cryptography presents new challenges posed by quantum computers, necessitating the development of stronger encryption processes. One of the post-quantum cryptographic methods capable of providing protection against such threats is the Niederreiter cryptosystem based on binary Goppa codes. In this study, binary Goppa codes are utilized in the formation of public and private keys, as well as in the decoding process. The implementation employs a specific polynomial over a finite field of order sixteen, resulting in code parameters with a length of 12, a dimension of 4, and the capability to correct up to two errors. Goppa codes are applied in the error correction process through syndrome calculation, enabling the detection and correction of erroneous bits and accurate recovery of the original message. The results demonstrate that binary Goppa codes are effective in detecting and correcting errors, thereby ensuring message integrity. This research is expected to contribute to the development of more robust cryptosystems for maintaining information confidentiality in the rapidly evolving digital era.
Implementasi Kode Goppa dalam Kriptosistem McEliece untuk Keamanan Data Terhadap Serangan Kuantum Khoiriyah, Lili; Khudzaifah, Muhammad; Herawati, Erna
Jurnal Riset Mahasiswa Matematika Vol 4, No 3 (2025): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v4i3.31212

Abstract

The importance of data security in the digital era is growing, particularly in the face of quantum computing threats against classical cryptographic algorithms. One of the main candidates for post-quantum cryptography is the McEliece cryptosystem, which employs error-correcting codes to enhance encryption strength. This study implements Goppa codes within the McEliece cryptosystem to increase resistance against quantum attacks. A degree-two polynomial over a finite field with sixteen elements was used, resulting in code parameters with a length of twelve, a dimension of four, and the ability to correct two errors. Encryption is carried out by multiplying the binary message with the public key and adding a random error vector, while decryption utilizes the private key to correct errors through syndrome calculation. The results demonstrate that employing Goppa codes enhances system security by complicating the ciphertext structure, thereby strengthening resilience against quantum-based attacks. This implementation confirms that classical coding techniques remain relevant and effective in supporting modern cryptography.
Co-Authors Adinda FA, Jovanscha Qisty Ahadiyah, Dwina Nurul Aisyiyah, Amadhea Aisyatul Aldri Frinaldi Andi Suhendi Andriani, Jatri Amellcia Andyani, Nanda Arum Anifatussaa'dah, A Anika Candrasari Arif Setiawan Astuti, Riawati Asyifa, Tsalitsa Rizky Nur Aulia, Shofia Az Zahra Azizah, Restu Noor Ba'is, Mohamad Abdul Basusena, Rahardian Surya Christiana, Miracle Chusnia, Aldina Laili Citra, Tia Mella Clarin, Giofanny Devi Usdiana Rosyidah Dewi Marhaeni Diah Herawati Dewi, Ayu Galih Permata Dian Maharani, Dian Dwi Sarbini Dzafira, Laila El Mubaraq, Syahrun Erika Diana Risanti Fachreza, Putri Aulia Fajar, Rezky Fasda, Bachuroh Fauzi , Soni Febriana Kurniasari Fitriani, Rizki Ainun Fortuna, Tista Ayu Gewab, Bima Tirta Pradana Ajie Habibie, M Rudi Habibullah, Muhamad Hairur Rahman Haryoto, H Heni Widayani HI, Marsilia Rosa Sinensis Hidayah Karuniawati Hisyam Fahmi Ichsan, Burhanudin Ida Maesaroh, Ida Iftitahur Rohmah Imam Sujarwo Indah Suasani Wahyuni Iwan Setiawan Izzatul Syafiqah, Izzatul Juhari Juhari, Juhari Junardi Harahap Juni Triastuti, N Khoiriyah, Lili khusnul khotimah Kralawi Sita, Kralawi Kusuma, Fitria Nur Kusumastuti, Lina Ayu Ladunniyyah, Zakiyya Dzul Lailasari, Della Lailasari, Della Listiana Masyita Dewi Ludyawati, Ludyawati Luthfi Hakim Mardaningrum, Reta Wanda Mariska Sri Harlianti Marsya, Vitania Moch. Sony Fauzi Mohammad Nafie Jauhari Muhammad Khudzaifah Muhtadi, M Muslihah, Sayyidah Nurul N. Juni Triastuti Nasasra, Valerina Ningtias, Ratih Kusuma Ningtiyas, Ratih Kusuma Nisa', Faridita khoirun Novani, Dwi Nur Mahmudah Nur'aeny, Nanan Nurdiani Rakhmayanthie, Nurdiani Nurhayani nurhayani Nurseptiria, Haliza Arzeti Nurul Hikmah Oktaviani, Ardalia Rinanda Putri, Maulina Thahara Qalbi, Salikha Tsamratul Qotrunnajah, Annisa Rafika Zahrotul Fauziah Rahma, Inke Miladunka Rahman, Raisha Inayah Rahmatullah, Bagus Aziz Retno Sintowati - Ria Dhea Layla Nur Karisma Riana, Shinta Rifaini, Fidhia Nur Risma Amelia, Risma Safira, Aulia Mega Sari, Fitri Nofita Silaban, Natanael Sivabalasundram, Sangary Sri Sri Harini Sri Hertinjung, Wisnu Sri Wahyu Basuki Studiviani, Raafika Sulistyani, S Susanto, Syarafina Ayu Putri Tanti Azizah Sujono Tri Agustina, Tri Trihatmoko, Fahriza Mei Ufa Anita Afrilia Utama, Haya Nabilah Varera, Oriza Wahyu B, Sri Wahyu Basuki, Sri Wahyu Hidayat Winny Yohana, Winny Yulia Sofiatin Yuliawati Zenab, Yuliawati Yusuf Alam Romadhon