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All Journal JSI: Jurnal Sistem Informasi (E-Journal) SWARNA Integra: Journal of Integrated Mathematics and Computer Science Limits: Journal of Mathematics and Its Applications Nemui Nyimah
Notiragayu
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Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Other

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Workshop Pembuatan Media Pembelajaran dan Pengolahan Nilai bagi Guru SMK Nurul Huda Pringsewu Widiarti; Asmiati; Kurniasari, Dian; Notiragayu; Warsono; Okzarima, Wenty; Suciati, Indah
SWARNA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 6 (2024): SWARNA: Jurnal Pengabdian Kepada Masyarakat, Juni 2024
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/swarna.v3i6.1315

Abstract

Sekolah Menengah Kejuruan (SMK) Swasta Nurul Huda Pringsewu memiliki empat jurusan, yaitu Asisten Perawat, Farmasi, Multimedia, dan Teknik Kendaraan Ringan dengan jumlah peserta didik sebanyak 205 Siswa dan guru sebanyak 30 orang. Berdasarkan data yang diperoleh hanya sekitar  28% lulusan SMKS Nurul Huda Pringsewu yang melanjutkan pendidikannya ke PT. Dengan demikian diperlukan adanya pembinaan terintegrasi untuk meningkatkan keinginan para siswa melanjutkan pendidikan ke PT.  Pengabdian ini menitik beratkan pada pembinaan komprehensif guru. Pembinaan guru meliputi pelatihan pembuatan media pembelajaran menggunakan Canva dan pengolahan nilai menggunakan Microsoft Excel. Kegiatan pengabdian ini mendapat sambutan  dan hasil yang baik dari para guru di SMK Swasta Nurul Huda Pringsewu. Berdasarkan hasil analisis statistik dengan menggunakan Uji T (T Test) menggunakan R Studio diperoleh bahwa nilai pre-test sebelum dilakukan workshop berbeda sangat signifikan dengan nilai post-test setelah dilakukan workshop.
Implementation of Random Forest Method for Customer Churn Classification Kurniasari, Dian; Humairosi, Lutfia; Warsono; Notiragayu
JSI: Jurnal Sistem Informasi (E-Journal) Vol 17 No 1 (2025): Vol 17, No 1 (2025)
Publisher : Jurusan Sistem Informasi Fakultas Ilmu Komputer Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18495/jsi.v17i1.202

Abstract

Annually, the banking sector consistently undergoes substantial expansion, as demonstrated by the escalating quantity of banks. Nevertheless, this expansion has led to escalating rivalry among banks as they strive to offer superior service to consumers, ultimately impacting customer migration across organizations. Customer churn, or attrition, substantially influences a company's financial performance. Hence, it is crucial to discern the conduct of clients who can discontinue their association with the organization. Precise identification is essential to gather the necessary information for the organization to retain clients and decrease churn rates. An effective strategy for addressing this issue is categorizing client behaviour using historical data. The study utilized the Random Forest approach, employing a 90% training data and 10% testing data ratio. The hyperparameter tuning findings indicate that the optimal parameter combination for constructing a Random Forest model is 400 n_estimators and 40 max_depth. The Synthetic Minority Over-Sampling Technique (SMOTE) mitigates data during categorization. The evaluation of the model demonstrates its exceptional performance in classifying imbalanced data, achieving an accuracy of 90.83%, precision of 89.29%, recall of 92.07%, and  f1-score of 90.66%.
Solving the Traveling Salesman Problem on a Directed Graph Using Greedy Algorithm (Case Study: Locations of BRI Bank in Bandar Lampung City) Nurfabella, Rehsya; Chasanah, Siti Laelatul; Notiragayu
Integra: Journal of Integrated Mathematics and Computer Science Vol. 1 No. 1 (2024): March
Publisher : Magister Program of Mathematics, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/integrajimcs.2024117

Abstract

The traveling salesman problem is the idea that a salesman must discover the shortest path between an origin point and many destination points, returning to the origin point after visiting the destination point once. In this study, the Greedy Algorithm will be used to solve the Traveling Salesman Problem on a directed graph which represented BRI Banks in Bandar Lampung city. The locations of the banks are represented by points, while the journey time between BRI Banks is represented by lines. According to the results, 130 minutes was the same amount of time spent manually and with the Python software.
Dimensi Metrik Hasil Operasi Tertentu pada Graf Petersen Diperumum Asmiati; Ahmad Ari Aldino; Notiragayu; La Zakaria; Muslim Anshori
Limits: Journal of Mathematics and Its Applications Vol. 16 No. 2 (2019): Limits: Journal of Mathematics and Its Applications Volume 16 Nomor 2 Edisi De
Publisher : Pusat Publikasi Ilmiah LPPM Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Misalkan  graf terhubung dan , , jarak titik  dan  yang  dinotasikan dengan  adalah panjang lintasan terpendek dari kedua titik tersebut. Misalkan  representasi titik  terhadap  adalah urutan   -vektor,   . Himpunan  disebut himpunan pembeda,  jika  untuk setiap dua titik berbeda , . Kardinalitas minimum dari himpunan pembeda  disebut dimensi metrik dari  dinotasikan dengan . Pada penelitian ini dibahas tentang dimensi metrik dari hasil operasi tertentu pada graf Petersen diperumum.
Pelatihan Pemahaman Konsep Geometri Berbasis Origami Bagi Siswa SD Negeri 1 Labuhan Ratu, Bandar Lampung Notiragayu; Wamiliana; Asmiati; Widiarti
Nemui Nyimah Vol. 5 No. 1 (2025): Nemui Nyimah Vol. 5 No. 1 2025
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v5i1.171

Abstract

The Origami-Based Geometry Concept Understanding Training for Students of SDN 1 Labuhan Ratu, Bandar Lampung, aims to provide knowledge and an in-depth understanding of geometric building concepts to 20 students in grades 4 and 5 over 2 days as an effort to improve students' abilities and absorption of geometry materials in particular and mathematics more broadly. In this training, the lecture method is applied with slide presentation media, which is needed to explain the concept of geometric buildings and is varied with demonstrations of flat and spatial building models through origami paper demonstrations. Sample data were obtained from the results of the pre-test at the beginning of the training and the post-test at the end of the training. Then, from this paired data form, a hypothesis test was carried out to determine whether the two groups of data were significantly different or not. The results obtained showed an average increase of 22% after the training. This shows that students' absorption of origami-based geometry has improved.
The Comparison of the Nearest Neighbor and Modified Sollin Algorithms for Determining the Shortest Tour for BNI Bank Branches in Lampung Province Maharani, Assyfa Dwipa; Putri, Desiana; Sapitri, Nonik Mega; Notiragayu; Ansori, Muslim
Integra: Journal of Integrated Mathematics and Computer Science Vol. 2 No. 3 (2025): November
Publisher : Magister Program of Mathematics, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/integrajimcs.20252342

Abstract

BNI is one of the government -owned banks in Indonesia. At certain times, BNI experiences a significant increase in the number of customers, which can lead to long queues. In such situations, customers generally consider visiting other BNI branches. To optimize time and cost, it is necessary to have information to determine the shortest tour between BNI locations in Lampung Province. The purpose of this study is to determine the shortest tour among 21 BNI locations in Lampung Province. The results show that both the Nearest Neighbor Heuristic Algorithm and the Modified Sollin’s Algorithm produce the same solution for Euclidean distance data and Haversine distance data. However, for time-based data, the Modified Sollin’s Algorithm performs better than the Nearest Neighbor Heuristic Algorithm.
Co-Authors Ahmad Ari Aldino Asmiati Desiana Putri Dian Kurniasari Humairosi, Lutfia La Zakaria Maharani, Assyfa Dwipa Muslim Anshori Muslim Ansori Nurfabella, Rehsya Okzarima, Wenty Putri, Amelia Fallizia Sapitri, Nonik Mega Siti Laelatul Chasanah, Siti Laelatul Suciati, Indah Wamiliana Warsono Widiarti