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All Journal Sistemasi: Jurnal Sistem Informasi JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI JurTI (JURNAL TEKNOLOGI INFORMASI) The IJICS (International Journal of Informatics and Computer Science) JURIKOM (Jurnal Riset Komputer) JURTEKSI Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Journal of Information Systems and Informatics Jurnal Sistem Informasi dan Informatika (SIMIKA) Jurnal Pengabdian Masyarakat Multidisiplin Jurnal Teknik Informatika (JUTIF) Jutsi: Jurnal Teknologi dan Sistem Informasi J-Com (Journal of Computer) Jurnal IPTEK Bagi Masyarakat Brilliance: Research of Artificial Intelligence Abdimas Indonesian Journal Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Journal Of Indonesian Social Society Jurnal Ilmiah Multidisiplin Nusantara ITEJ (Information Technology Engineering Journals)
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Belajar Membuat Grafik Linier Sederhana Bagi Siswa SMA Panti Budaya Kisaran Hommy Dorthy Ellyany Sinaga; Rizaldi Piliang; Dewi Anggraeni
Jurnal IPTEK Bagi Masyarakat Vol 1 No 3 (2022)
Publisher : Ali Institute of Research and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/jibm.v1i3.163

Abstract

Peningkatan kemampuan hardskill siswa SMA Panti Budaya Kisaran, salah satunya dapat diperoleh melalui bidang teknologi lewat mata pelajaran Teknologi Informasi dan Komunikasi. Software Excel menjadi media belajar bagi siswa untuk dapat membuat grafik linier bagi kebutuhan penyajian data pada saat menulis karya ilmiah di sekolah. Kegiatan pengabdian kepada masyarakat yang dilakukan tim dosen STMIK Royal Kisaran pada tanggal 13 – 14 Januari 2022, di SMA Panti Budaya Kisaran. Peserta kegiatan berjumlah 30 orang siswa SMA. Kepada siswa diberikan pelatihan cara membuat grafik linier dengan praktek langsung di komputer menggunakan excel. Hasil dari pelatihan menunjukkan antusiasme siswa dan mereka menunjukkan keberhasilan dalam membuat grafik.
ANALISIS HEMOROID PADA IBU HAMIL DENGAN SISTEM CERTAINTY FACTOR Indri Damayani; Sudarmin Sudarmin; Rizaldi Piliang
Jurnal Sistem Informasi dan Informatika (Simika) Vol. 8 No. 2 (2025): Jurnal Sistem Informasi dan Informatika (Simika)
Publisher : Program Studi Sistem Informasi, Universitas Banten Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47080/simika.v8i2.3973

Abstract

Hemorrhoids in pregnant women are a physiological condition that often accompanies pregnancy. Women who had hemorrhoids before pregnancy are at a higher risk of developing them during pregnancy. The main concern is the possibility of bleeding, which may lead to anemia and negatively impact fetal development. To assist in analyzing the symptoms of hemorrhoids in pregnant women, an expert system was developed using the Certainty Factor method. This system aims to provide early detection and quick action recommendations for patients at Tanjungbalai General Hospital. The expert system is web-based and uses the Certainty Factor method to diagnose hemorrhoids based on symptoms entered by the user. The system calculates the confidence value of each possible disease and provides a diagnosis with a certainty percentage. Based on the CF calculation results, the highest CF value obtained is 0.7475 or 75%, indicating that the most likely diagnosis for the user’s symptoms is Internal Hemorrhoids (P01). The developed system includes features such as user registration, symptom consultation, and disease information. The administrator panel allows experts to manage disease data, symptom data, diagnostic rules, and user reports. Implemented using PHP and MySQL, this system helps pregnant women identify early symptoms of hemorrhoids, enabling timely treatment and reducing complications. By providing accurate diagnoses and suggested solutions, this expert system is expected to raise awareness and improve health outcomes for pregnant women suffering from hemorrhoids.
Penerapan Metode Weighted Moving Average Pada Proses Peramalan Penjualan Kue Kering Difa Rizaldi Rizaldi; Dewi Rahmawati; Ari Dermawan
Jurnal Ilmiah Multidisiplin Nusantara (JIMNU) Vol. 1 No. 2 (2023): JIMNU - JULI
Publisher : PT. Padang Tekno Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59435/jimnu.v1i2.127

Abstract

Penelitian ini bertujuan untuk membangun sebuah aplikasi yang dapat meramalkan persediaan kue di masa yang akan datang pada rumah Difa sehingga permasalahan yang terjadi selama ini seperti kesalahan dalam mempersiapkan persediaan kue berakibat pada kerugian yang cukup membuat pemilik usaha kue ini mengeluh. Kekecewaan pelanggan disebabkan stok kue sudah habis tidak dapat dihindari dan sebaliknya jika persediaan kue berlebih maka akan mengakibatkan kerugian karena modal yang digunakan tidak Kembali. Adapun metode yang diterapkan pada proses peramalan ini adalah menggunakan Weighted Moving Average yang dapat membantu merekomendasikan berapa jumlah persediaan yang dapat disediakan dimasa yang akan datang dengan tingkat kesalahan dibawah 5%. Untuk menunjang penelitian ini berjalan dengan baik, maka data yang dibutuhkan adalah data pengguna, data periode, data kue, dan data penjualan kue.
Application Of Certainty Factor In Detecting Learning Concentration Disorders In Children At School Rian Syahputri; Rizaldi Rizaldi; Elly Rahayu
ITEJ (Information Technology Engineering Journals) Vol. 10 No. 2 (2025): December
Publisher : Pusat Teknologi Informasi dan Pangkalan Data IAIN Syekh Nurjati Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24235/itej.v10i2.277

Abstract

Learning concentration disorders are a fairly common problem in elementary schools and can have a significant impact on students' academic performance. At UPTD SDN 015861 Bunut Seberang, initial observations indicate that around 20–25% of students experience symptoms such as distractibility, difficulty focusing, hyperactivity, and decreased motivation to learn. Current interventions are limited, lack a structured system, and rely on teachers' subjective assessments. This study aims to develop an expert system based on the Certainty Factor method to detect learning concentration disorders more objectively and accurately. The research method uses a quantitative approach with stages of problem identification, data collection through observation and interviews, analysis, system design using UML, and implementation based on PHP and MySQL. The system processes student symptom data, calculates the confidence level of the diagnosis, and provides follow-up recommendations for teachers and parents. The implementation results show that the system can efficiently identify potential learning concentration disorders, assist teachers in decision-making, and serve as a model that can be adapted by other schools facing similar issues.
Information System Stock And Chain Supply Smart Platform Web Rule-Based On Store Break Split Ade Wm Nofita Elfina; Rizaldi Rizaldi; Parini Parini
Brilliance: Research of Artificial Intelligence Vol. 6 No. 3 (2026): Brilliance: Research of Artificial Intelligence, Article Research August 2026
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v6i3.8452

Abstract

Inventory management is an important aspect in supporting business operations, especially in the trading sector with a high level of product turnover. At Ade WM Glassware Store, inventory management is still carried out manually, resulting in inaccurate data, delayed information, and difficulties in monitoring stock availability in real-time. In addition, coordination with suppliers is not yet well integrated, which often leads to delays in restocking and imbalanced inventory levels. This study aims to design and develop a web-based intelligent inventory and supply chain information system using a rule-based approach. The research stages include data collection through observation, interviews, and literature study, system requirement analysis, system design using UML, and implementation using PHP and MySQL. The results show that the developed system improves inventory data accuracy, accelerates the recording process, and facilitates real-time monitoring of stock and suppliers. Therefore, the system enhances operational efficiency and supports the optimization of the store’s supply chain.
An Empirical Evaluation of Confidence Miscalibration in Vanilla BERT-Based Stress Detection on Social Media Rizaldi; Kusrini; Utami Ema; Agastya I Made Artha
Journal of Information System and Informatics Vol 8 No 3 (2026): June
Publisher : Asosiasi Doktor Sistem Informasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63158/journalisi.v8i3.1634

Abstract

This study evaluates the reliability of confidence estimates produced by a Vanilla BERT classifier for stress detection using the Dreaddit benchmark. BERT-base-uncased was fine-tuned on 3,553 labeled text segments, following the standard split of 2,838 training samples and 715 test samples. The model was assessed as a single diagnostic baseline without additional linguistic features, label smoothing, post-hoc calibration, or other calibration interventions. Evaluation was conducted using discriminative performance metrics, including accuracy, precision, recall, and F1-score, as well as probabilistic reliability metrics, including Brier Score, Expected Calibration Error, Adaptive Calibration Error, and a reliability diagram. The Vanilla BERT model achieved 79.02% accuracy, 78.00% precision, 82.65% recall, and 80.26% F1-score, indicating competitive classification performance for stress detection. However, the calibration results revealed noticeable miscalibration, with a Brier Score of 0.1565, Expected Calibration Error of 0.0847, and Adaptive Calibration Error of 0.0880. The most prominent confidence mismatch occurred in the 0.8–0.9 confidence interval, while the 0.9–1.0 interval contributed the most to Expected Calibration Error due to its larger sample proportion. These findings show that although Vanilla BERT performs reasonably well in distinguishing stressed from non-stressed text, its confidence estimates are not fully reliable. Therefore, this study positions Vanilla BERT as a diagnostic reliability baseline and emphasizes the importance of evaluating stress detection models using both classification performance and probabilistic calibration criteria.
Feasibility Classification of Free Nutritious Meal Kitchen Partners Using C4.5 for Food Safety Abdul Kholiq; Rizaldi Rizaldi; Dewi Anggraeni
SISTEMASI Vol 15, No 7 (2026): Sistemasi: Jurnal Sistem Informasi
Publisher : Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/stmsi.v15i7.6598

Abstract

The Free Nutritious Meal Program requires a rigorous selection process for kitchen partners because kitchen quality, sanitation, clean water availability, human resources, production capacity, and food distribution are directly associated with food safety assurance. This study aims to develop a C4.5-based classification model to replicate the operational feasibility assessment rules used for evaluating kitchen partners in the Free Nutritious Meal Program based on field survey data. The dataset comprised 200 kitchen partners, including micro, small, and medium enterprises (MSMEs) and catering providers, located in Asahan Regency, North Sumatra, Indonesia, and was collected through structured field observations. Each partner was evaluated using ten assessment criteria: legal compliance, location, facilities and infrastructure, sanitation, clean water availability, human resources, production capacity, food safety, distribution, and risk history. Individual criterion scores were converted into a weighted composite score, after which feasibility labels were assigned according to an operational decision rule based on a minimum threshold score of 80 and the presence of critical failure criteria, defined as mandatory indicators that automatically disqualify a partner regardless of whether the minimum score threshold is achieved. Consequently, the class labels were not derived from independent expert audits or official institutional decisions but were generated from policy-based operational rules and used as the ground truth for model training. The dataset was divided into training and testing sets using an 80:20 ratio, resulting in 160 training instances and 40 testing instances. The results showed that 48 partners were classified as Feasible, while 152 were classified as Not Feasible. The C4.5 model achieved an accuracy of 95.00%, with 90.00% precision, 90.00% recall, and a 90.00% F1-score. The most influential predictor was the number of critical failure criteria (92.97%), followed by the clean water score (7.03%). These findings demonstrate that the C4.5 algorithm can effectively extract and replicate operational feasibility assessment rules, providing a transparent, consistent, and interpretable decision-support tool for selecting kitchen partners while supporting food safety assurance.
Sosialisasi Platform Kampus Merdeka Sebagai Wadah Berkarya Guru Dewi Anggraeni; Rizaldi Rizaldi
Journal Of Indonesian Social Society (JISS) Vol. 1 No. 2 (2023): JISS - Juni
Publisher : PT. Padang Tekno Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59435/jiss.v1i2.119

Abstract

Platform merdeka mengajar adalah suatu aplikasi yang digunakan untuk membantu guru untuk mendapatkan referensi, inspirasi dan pemahaman untuk menerapkan kurikulum merdeka. SDN 015905 Binjai Serbangan Kecamatan air joman adalah salah satu sekolah sasaran yang menjadi fokus utama dalam peningkatan kualitas pendidikan. Isi platform merdeka mengajar antara lain adalah edukasi menjadi penggerak untuk guru dalam mewujudkan pelajar pancasila. Menyediakan referensi bagi guru untuk mengembangkan praktik mengajar sesuai kurikulum merdeka, serta mendorong guru untuk terus berkarya dan menyediakan wadah berbagi paktek yang baik. Tujuan pelaksanaan pengabdian ini merupakan memberikan pengetahuan dan pengenalan mengenai aplikasi platform kampus merdeka sebagai wadah berkarya guru.
Pelatihan Media Pembelajaran Menggunakan Microsoft PowerPoint 2010 untuk Guru Taman Kanak-Kanak Dewi Anggraeni; Rizaldi Rizaldi; Muthia Dewi
Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Vol. 1 No. 1 (2021): April 2021
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpstm.v1i1.606

Abstract

Abstract: Information technology-based learning as a basis for introduction to kindergarten teachers so that teachers can develop learning models in the information technology era which has begun to be implemented in the world of education. In this community service, teachers are given a basic introduction to the benefits of the role of technology in the learning process. As a result of this community service, it is hoped that ABA XI Kindergarten teachers will be able to apply one of the technology applications that have great potential to be used as learning media, namely using the Microsoft PowerPoint application. Microsoft PowerPoint is an application program part of Microsoft Office. Microsoft powerpoint is used to help create materials for presentations.            Keywords: Information Technologi;Microsoft Office;Microsoft PowerPoint;Kindergarten  Abstrak: Pembelajaran berbasis teknologi informasi sebagai dasar pengenalan pada guru taman kanak-kanak agar guru bisa mengembangkan model pembelajaran di era teknologi informasi yang mulai diimplementasikan pada dunia pendidikan. Dalam pengabdian kepada masyarakat ini guru-guru diberikan pengenalan dasar tentang manfaat peranan teknologi didalam proses pembelajaran. Hasil dari pengabdian masyarakat ini, diharapkan guru-guru TK ABA XI sudah bisa menerapkan salah satu penerapan teknologi yang memiliki potensi besar untuk digunakan sebagai media pembelajaran yaitu menggunakan aplikasi microsoft powerpoint. Microsoft powerpoint adalah program aplikasi bagian dari microsoft office. Microsoft powerpoint digunakan untuk membantu pembuatan bahan untuk persentasi. Kata kunci: Teknologi Informasi;Microsoft Office;Microsoft PowerPoint
Penerapan Fungsi - Fungsi Microsoft Excel Dalam Pengelolaan Data Administrasi Perkantoran Guntur Maha Putra; Rizaldi Rizaldi; Arridha Zikra Syah
Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Vol. 1 No. 1 (2021): April 2021
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpstm.v1i1.612

Abstract

Abstract: As a Course Institution, acculturation and cooperation between supporting stakeh-olders is needed, to improve the existence of the institution by carrying out training training that supp-orts students and the general public to spread knowledge and skills through collaboration in the form of community service. This is also in accordance with what is stated in the Vision and Mission of LKP Pelita Media Kisaran. Starting from the above, the Community Service Te-am collaborates to carry out community service that is in line with the Vision and Mission of LKP Pelita Media which is useful as a portfolio of LKP activities and is also useful for service participants who take part in activities to improve the knowledge and skills of each participant in terms of scope of application of microsoft excel functions in office administration data management. Keywords:. Training; Excel; Community Service.  Abstrak: Sebagai Lembaga Kursus maka diperlukan akulturasi dan kerjasama diantara stak-eholder yang mendukung, untuk meningkatkan eksistensi lembaga dengan melaksanakan pelatihan-pelatihan yang mendukung kepada peserta didik maupun masyarakat umum untuk menyebarkan pengetahuan dan keterampilan melalui kerjasama dalam bentuk pengabdian masy-arakat. Hal ini juga sesuai dengan yang termaktub di dalam Visi dan Misi LKP Pelita Media Kisaran. Berawal dari hal diatas maka Tim Pengabdian Masyarakat melakukan kerjasama untuk melakukan pengabdian kepada masyarakat yang sejalan dengan Visi dan Misi LKP Pelita Media yang berguna sebagai fortofolio kegiatan LKP dan juga berguna bagi peserta-peserta pengabdian yang mengikuti kegiatan untuk meningkatkan pengetahuan dan keterampilan masing-masing peserta dalam hal lingkup penerapan fungsi-fungsi microsoft excel dalam pengelolaan data administrasi perkantoran. Kata kunci: Pelatihan; Excel; Pengabdian Masyarakat.
Co-Authors Abdul Kholiq Abdul Kholiq Agastya I Made Artha Ari Dermawan Ariska, Feby Arridha Zikra Syah Dewi Anggraeni Dewi Anggraeni Dewi Rahmawati Elly Rahayu elvina yunita Endra Saputra Febri Dristyan Guntur Maha Putra Harahap, Indra Ramadona Hommy Dorthy Ellyany Sinaga Indri Damayani Kifty, Wan Mariatul Kusrini Maha Putra, Guntur Maharani, Dewi Mardalius Mardalius Maulana Dwi Sena Muhammad Iqbal Muhazir, Ahmad Muthia Dewi Nasution, Akmal Nofita Elfina Parini Parini Putra, Guntur Maha Rahayu, Elly Rahmadani, Sherly Rian Syahputri Riki Handoko Rizky Maulidya SANTOSO SANTOSO Sinta Ramayani Sudarmin Sudarmin Sumantri Sumantri Teres, Ella Octa Umairoh Utami Ema