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All Journal Indonesian Journal of Electronics and Instrumentation Systems ELKHA : Jurnal Teknik Elektro JUITA : Jurnal Informatika Annual Research Seminar Sinkron : Jurnal dan Penelitian Teknik Informatika Jusikom : Jurnal Sistem Komputer Musirawas SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Petir KOMPUTIKA - Jurnal Sistem Komputer Jurnal Teknologi Terpadu Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Progresif: Jurnal Ilmiah Komputer Jurnal Ilmiah Betrik : Besemah Teknologi Informasi dan Komputer Algoritme Jurnal Mahasiswa Teknik Informatika Informatics and Enginering Dedication MDP Student Conference Jurnal Ilmiah Betrik : Besemah Teknologi Informasi dan Komputer INOVTEK Polbeng - Seri Informatika JuTISI (Jurnal Teknik Informatika dan Sistem Informasi)

Yohannes, Yohannes

Universitas Multi Data Palembang

Author-ID : 423293

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Klasifikasi Sampah Daur Ulang Menggunakan Dukungan Vektor Machine Dengan Fitur Pola Biner Lokal Leonardo, Leonardo; Yohannes, Yohannes; Hartati, Ery
Algoritme Jurnal Mahasiswa Teknik Informatika Vol 1 No 1 (2020): Oktober 2021 || Algoritme Jurnal Mahasiswa Teknik Informatika
Publisher : Program Studi Teknik Informatika Universitas Multi Data Palembang

Garbage is one of the problems that always arise in Indonesia and even in the world. Increasingly, the production of waste is increased along with the increase in population and consumption. Therefore, need a prevention to stop wasting or producing garbage through recycle. This research do garbage recycle classification of cardboard, glass, metal, paper and plastic by using Local Binary Pattern (LBP) texture feature extraction methode and Support Vector Machine (SVM) as classification methode. For examination technic and dataset distribution is using K-Fold Cross Validation methode type Leave One Out (LOO). From examination result had been done were using fold 5 until fold 10. Polynomial kernel get highest accuracy result from every fold used with mean point 87.82%. Based on SVM classification examination result whether linear kernel, polynomial nor gaussian by using fold 5 until fold 10. The best accuracy point for cardboard garbage is 96.01%. For glass garbage, the best accuracy point is 90.62%. Then, metal garbage get the best accuracy point 89.72%. While paper garbage with highest accuracy point 96.01%. And plastic garbage with highest accuracy point 87.64%.

Rancang Bangun Aplikasi Permainan EscapeMenggunakan Logika Fuzzy Dan Algoritma Floyd Warshall Prabowo, Adrianus; Devella, Siska; Yohannes, Yohannes
Algoritme Jurnal Mahasiswa Teknik Informatika Vol 1 No 2 (2021): April 2021 || Algoritme Jurnal Mahasiswa Teknik Informatika
Publisher : Program Studi Teknik Informatika Universitas Multi Data Palembang

Aplikasi permainan ESCAPE merupakan permainan yang mengandalkan player untuk keluar dari labirin tersebut. Penelitian ini menggunakan Logika Fuzzy untuk membuat perilaku komputer menjadi susah ditebak dan Floyd Warshall untuk membuat item jebakan menghalangi player saat bermain. Aplikasi permainan ini dibangun dan dirancang dengan menggunakan Unity 3D dan menggunakan metodologi prototype. Hasil uji dari data sampel menunjukkan bahwa logika fuzzy berhasil diterapkan dalam menentukan perilaku NPC. Hasil uji dari data sampel yang dilakukan menunjukkan bahwa kemunculan item jebakan berhasil diterapkan pada aplikasi permainan ESCAPE.

Penggunaan Fitur HOG Dan HSV Untuk Klasifikasi Citra Sel Darah Putih Prasthio, Rial; Yohannes, Yohannes; Devella, Siska
Algoritme Jurnal Mahasiswa Teknik Informatika Vol 2 No 2 (2022): April 2022 || Algoritme Jurnal Mahasiswa Teknik Informatika
Publisher : Program Studi Teknik Informatika Universitas Multi Data Palembang

Sel darah putih (leukosit) merupakan sel pembentuk komponen darah yang diproduksi oleh sumsum tulang dan disebarkan ke seluruh tubuh melalui aliran darah. Sel darah putih merupakan bagian penting dari sistem kekebalan tubuh yang berfungsi untuk menghasilkan antibodi yang dapat membantu tubuh manusia dalam melawan berbagai penyakit. Sel darah putih dibagi menjadi 5 jenis, yaitu neutrofil, limfosit, monosit, eosinofil, dan basophil. Analisis sel darah putih masih dilakukan secara manual yang memakan waktu yang lama dan memiliki tingkat ketelitian dan keakuratan yang rendah. Solusi yang dapat dilakukan salah satunya menggunakan machine learning yaitu SVM (support vector machine) dengan menggunakan fitur HOG dan HSV. Penelitian ini menggunakan dataset hasil mikroskop sel darah putih dari Kaggle yang bersifat public. Jumlah dataset yang digunakan dalam penelitian berjumlah 12.392 gambar dari 4 jenis sel darah putih (Eosinophil, Lymphocyte, Monocyte, dan Neutrophil). Pada perhitungan confusion matrix hasil tertinggi didapatkan oleh Neutrophil dengan accuracy sebesar 88,55%, precision sebesar 100%, dan recall sebesar 54,19%.

Klasifikasi Penyakit Mata Menggunakan Convolutional Neural Network Dengan Arsitektur VGG-19 Marcella, Dewi; Yohannes, Yohannes; Devella, Siska
Algoritme Jurnal Mahasiswa Teknik Informatika Vol 3 No 1 (2022): Oktober 2022 || Algoritme Jurnal Mahasiswa Teknik Informatika
Publisher : Program Studi Teknik Informatika Universitas Multi Data Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/algoritme.v3i1.3331

This study raised a topic related to the classification by using eye diseases in humans. This study uses two optimizing options, namely SGD and Adagrad. The data used are 601 images consisting of 430 training images, 50 validation images, and 121 test images with a total of 4 classes. The method used in this study is the Convolutional Neural Network (CNN) method with the VGG-19 architecture, with input in the form of images that have gone through a preprocessing process, namely resizing and the CLAHE (Contrast Limited Adaptive Histogram Equalization) method of eye disease images. The test scenario consisted of 8 scenarios with different Optimizer and ClipLimit. The highest test results were obtained in the first scenario using the Adagrad optimizer and clipLimit of 1.0 with an accuracy value of 65.29%, precision of 66.53%, recall of 65.29%, and f1-score of 65. 40%.

Implementasi Algoritma K-Nearest Neighbor untuk Klasifikasi Cuaca Dandy, Dandy; Udjulawa, Daniel; Yohannes, Yohannes
Algoritme Jurnal Mahasiswa Teknik Informatika Vol 4 No 1 (2023): Oktober 2023 || Algoritme Jurnal Mahasiswa Teknik Informatika
Publisher : Program Studi Teknik Informatika Universitas Multi Data Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/algoritme.v4i1.4932

Weather is a brief natural event concerning the atmospheric conditions that take place on Earth which are determined by pressure, wind speed, temperature, and air phenomena. This study classifies 3 weather classes, namely sunny, cloudy, and rainy using the K-Nearest Neighbor algorithm as a weather classification algorithm with K value parameters of 3, 5, 7, and 9. Weather dataset 96.453 data to be examined is data taken from the Kaggle website. The dataset is divided into training data and test data with a ratio of 80:20. The implementation of the K-Nearest Neighbor algorithm produces a confusion matrix and classification report where in the confusion matrix, the largest number of correctly predicted data is at the value K = 9, namely 13.132 correctly predicted data with the largest number of correctly predicted data in the cloudy class, namely 10.865 data. As for the classification report, the highest accuracy value for both the cloudy, rainy, and sunny weather classes is at K = 9, which is 68.073%, and the highest precision, recall, and f1-score values are found in the cloudy class at K = 9, respectively contributed 72.095%, 89.288%, and 79.775%.

Pelatihan Membangun Server DNS Lokal di SMK Negeri 1 Palembang Arman, Molavi; Yohannes, Yohannes; Al Rivan, Muhammad Ezar
FORDICATE Vol 2 No 1 (2022): November 2022
Publisher : Universitas Multi Data Palembang, Fakultas Ilmu Komputer dan Rekayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/fordicate.v2i1.3393

Pengabdian masyarakat yang dilakukan di SMK Negeri 1 Palembang yaitu berupa pelatihan untuk membangun Server DNS. Pelatihan ini diikuti oleh siswa SMK sehingga siswa memiliki keterampilan dan pengetahuan terkait dengan server DNS. Pelatihan ini diawali dengan melakukan instalasi sistem operasi Linux Debian. Pelatihan ini dilakukan dengan cara praktikum dan tanya jawab. Dari pelatihan ini didapatkan pengetahuan bagaimana melakukan instalasi Linux Debian kemudian dapat membangun Server DNS.

Transfer Learning dengan MobileNetV2 untuk Klasifikasi Motif Jumputan Palembang Sahpira, Mulia; Yohannes, Yohannes
Algoritme Jurnal Mahasiswa Teknik Informatika Vol 6 No 1 (2025): Oktober 2025 || Algoritme Jurnal Mahasiswa Teknik Informatika
Publisher : Program Studi Teknik Informatika Universitas Multi Data Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/algoritme.v6i1.10998

Palembang jumputan fabric is one of Indonesia's cultural heritages that is unique in its motifs and manufacturing techniques. However, the lack of public understanding of the meaning of motifs and competition with other traditional fabrics are challenges in its preservation. This research aims to develop a classification model of Palembang jumputan fabric motifs using the Convolutional Neural Network method with MobileNetV2 architecture and transfer learning approach. The dataset used consists of 800 images of four types of motifs, namely Bintik Tujuh, Pola, Tabur, and Terong. The data is divided into 80% training, 10% validation, and 10% testing. The model was trained using four types of optimisers, namely AdamW, Adagrad, Nadam, and SGD, with training parameters of 100 epochs, batch size 32, and learning rate 0.001. The test results showed that AdamW gave the highest accuracy of 97%, followed by Nadam 96%, Adagrad 95%, and SGD 90%. The model recognised the motifs well, especially the Bintik Tujuh and Tabur motifs which achieved 100% accuracy. With these results, artificial intelligence can be utilised to support the preservation of Palembang jumputan fabrics through motif recognition technology.

Implementasi Arsitektur Half-UNet untuk Mendeteksi Kanker Payudara pada Citra Ultrasonografi Glen, Billy; Yohannes, Yohannes
Progresif: Jurnal Ilmiah Komputer Vol 20, No 1: Februari 2024
Publisher : STMIK Banjarbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35889/progresif.v20i1.1595

Breast cancer is one of the biggest causes of death for women worldwide. Breast cancer is a metastatic cancer and can spread to other organs, such as bones, liver, lungs and brain. Breast cancer can be detected at an early stage, but it is difficult to find and cases of breast cancer are on the rise. Therefore, this study uses the Half-UNet architecture for breast cancer sonogram dataset. The dataset used consists of 780 breast sonograms which are divided into training data and test data with a ratio of 80:20. The Dice Coefficient results obtained on the Half-UNet architecture is 0.7063. The U-Net value can provide better Dice Coefficient results, but the Half-UNet architecture has comparable values and provides results in a relatively faster time.

Residual-Gated Attention U-Net with Channel Recalibration for Polyp Segmentation in Colonoscopy Images Tanuwijaya, William; Yohannes
INOVTEK Polbeng - Seri Informatika Vol. 10 No. 3 (2025): November
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/4qmfa987

This study proposed a modification to the Attention U-Net architecture by integrating a Residual-Gated mechanism and Squeeze-and-Excitation (SE) Block-based channel recalibration within the Attention Gate to enhance feature selectivity in polyp segmentation. This integration reinforces both spatial and channel attention, enabling the model to better highlight polyp regions while suppressing irrelevant background features. Experiments were conducted on three colonoscopy datasets, CVC-ClinicDB, CVC-ColonDB, and CVC-300, using IoU and DSC metrics. Compared to the Attention U-Net baseline, the proposed model achieves noticeable improvements, with performance gains of mIoU 0.0043 and mDSC 0.0094 on CVC-ClinicDB, mIoU 0.0012 on CVC-ColonDB, and a larger margin of mIoU 0.0224 and mDSC 0.0127 on CVC-300. The best results were obtained on CVC-ClinicDB (mIoU 0.8889, mDSC 0.9412). Although the absolute scores on CVC-ClinicDB and CVC-ColonDB are lower than those reported in several recent studies, these datasets contain higher variability in polyp size, boundary ambiguity, and illumination, contributing to more challenging segmentation conditions. Visual evaluation further shows smoother and more coherent boundaries, especially on small or low-contrast polyps. Overall, the integration of the residual-gated mechanism and SE block within the attention gate effectively improves model accuracy and generalization, particularly in challenging scenarios.

Implementasi YOLOv10 untuk Pengenalan Alfabet SIBI berbasis Deteksi Gerakan Tangan Selvie, Selvie; Yohannes, Yohannes
Jutisi : Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Vol 14, No 3: Desember 2025
Publisher : STMIK Banjarbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35889/jutisi.v14i3.2953

Sign language is a primary communication tool for people with hearing and speech impairments. One key component of the Indonesian Sign System (SIBI) is the SIBI alphabet, used for words without specific signs. However, limited public understanding creates communication gaps. This study develops a web-based SIBI alphabet recognition system using the YOLOv10 model. The dataset initially contained 6,110 images and was augmented to 15,859 images. Eight hyperparameter settings were tested, with the best result at a learning rate of 0.001, batch size 32, and Adam optimizer, achieving mAP@50 of 0.988 and mAP@50–95 of 0.971. The model was then converted to ONNX for faster inference, yielding mAP@50 of 0.953 and 797.7 ms per image. The ONNX model was integrated into a web app capable of real-time SIBI recognition. Results show this approach is effective, inclusive, and accessible as an assistive communication tool.Keywords: Deep learning; SIBI Alphabet; YOLOv10 AbstrakBahasa isyarat merupakan sarana utama komunikasi bagi penyandang tunarungu dan tunawicara. Salah satu komponennya, alfabet Sistem Isyarat Bahasa Indonesia (SIBI), digunakan untuk menyampaikan kata yang tidak memiliki padanan isyarat khusus. Namun, kurangnya pemahaman masyarakat terhadap alfabet SIBI menimbulkan kesenjangan komunikasi. Penelitian ini bertujuan mengembangkan sistem pengenalan alfabet SIBI berbasis web menggunakan model YOLOv10. Dataset awal berjumlah 6.110 gambar dan diaugmentasi menjadi 15.859 gambar. Model dilatih menggunakan delapan konfigurasi hyperparameter yang menghasilkan performa terbaik pada learning rate 0,001, batch size 32, dan optimizer Adam dengan mAP@50 sebesar 0,988 dan mAP@50–95 sebesar 0,971. Untuk meningkatkan efisiensi, model dikonversi ke format ONNX dan diuji ulang menghasilkan mAP@50 sebesar 0,953 serta waktu inferensi 797,7 ms per gambar. Model ONNX kemudian diintegrasikan ke aplikasi web yang mampu mengenali alfabet SIBI secara real-time. Hasil menunjukkan pendekatan ini efektif sebagai alat bantu komunikasi yang inklusif dan mudah diakses.

Co-Authors Ade Hendri Pandrean Adhytio Mahendra Andreas, Kevin Azarya, Philips Denny Beni Anthony Bobby Jaya Saputra Cahyati, Imelia Dwinora Calvin Oliver Saputra Celvine Adi Putra Cendy Prakarsah Dafid Dafid Dandy, Dandy Daniel Udjulawa Daniel Udjulawa Devella, Siska Dody, Muhammad Famerdi, Farhan Agung Farhan Agung Famerdi Farisi, Ahmad Febbiola Febbiola Feristyani, Indah Firda Novia Rahmawati Gerry Jeven Timoti Glen, Billy Hafiz Irsyad Hartati, Ery Indah Feristyani Jericho Jericho Jerry Setiawan Jimmy Aprilyanto Johannes Petrus Julian Rusli Tee Baldi Juliana Nasution Kelvin Arianto Laksana, Jovansa Putra Leo Chandra Leonardo Leonardo M Ezar Al Rivan Marcella, Dewi Meiriyama Meiriyama, Meiriyama Meiriyama, Meiriyama Molavi Arman Muhammad Farid Athar Muhammad Rizky Pribadi Muhammad Yudha Setiawan Muhdhor, Umar Novan Wijaya Nur Rachmat Pandi Pandi Pandi Pandi, Pandi Pandrean, Ade Hendri Philips Denny Azarya Prabowo, Adrianus Prasthio, Rial Putra, Lipi Amanda Ricky Wijaya RR. Ella Evrita Hestiandari Sahpira, Mulia Saputra, Dika Sari, Yulya Puspita Selvie, Selvie Setiawan, Jerry Sonia Sonia, Sonia Tanuwijaya, William Timoteus Ivan Sariyo Wijang Widhiarso William Hadisaputra Yoannita Yoannita Yoannita Yoannita, Yoannita Yulya Puspita Sari

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