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All Journal ComEngApp : Computer Engineering and Applications Journal JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) Jurnal Varian ESTIMASI: Journal of Statistics and Its Application Jurnal Diferensial HOAQ (High Education of Organization Archive Quality) : Jurnal Teknologi Informasi MATHunesa: Jurnal Ilmiah Matematika Buletin Sistem Informasi dan Teknologi Islam Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Journal of Data Mining and Information Systems Kohesi: Jurnal Sains dan Teknologi Indonesian Journal on Data Science Parameter: Jurnal Matematika, Statistika dan Terapannya Emerging Statistics and Data Science Journal Teknologi : Jurnal Ilmiah Sistem Informasi
Shindi Shella May Wara
Universitas Pembangunan Nasional Veteran Jawa Timur
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Mathematics Public Health Social Sciences Other

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Evaluasi Kinerja Uji Normalitas pada Ragam Distribusi dan Ukuran Sampel Wara, Shindi Shella May; Adziima, Andri Fauzan; Nasrudin, Muhammad; Pratama, Alfan Rizaldy
JURNAL DIFERENSIAL Vol 7 No 2 (2025): November 2025
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v7i2.24042

Abstract

The normal distribution is a fundamental assumption in many parametric statistical methods. Therefore, testing for data normality is a crucial step prior to further analysis. This study aims to evaluate the performance of three widely used normality test methods: Kolmogorov-Smirnov (KS), Anderson-Darling (AD), and Shapiro-Wilk (SW), across various distributions (standard normal, exponential, and t-student with degrees of freedom 1, 20, and 100) and sample sizes (n = 20, 50, 100, 200, and 500). Data were generated through simulation with 1000 iterations for each combination. The results show that the KS method performs well on standard normal and t-student distributions with larger degrees of freedom. The AD method proves to be more sensitive, especially in detecting deviations from normality, though it is less stable for small sample sizes. Meanwhile, the SW method demonstrates optimal performance with large samples. These findings provide practical guidance in selecting appropriate normality test methods based on the characteristics of the data.
Segmentasi Wilayah Berdasarkan Indikator Kesehatan Lingkungan dan Akses Pelayanan Dasar di Provinsi Jawa Timur: Segmentasi Wilayah Berdasarkan Indikator Kesehatan Lingkungan dan Akses Pelayanan Dasar di Provinsi Jawa Timur Abdillah, Indah Rahma; Diana Novitasari; Amellia Harmaimun Hidayah; Shindi Shella May Wara; Wahyu Syaifullah Jauharis Saputra
Emerging Statistics and Data Science Journal Vol. 3 No. 3 (2025): Emerging Statistics and Data Science Journal
Publisher : Statistics Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/esds.vol3.iss.3.art24

Abstract

Upaya peningkatan kesehatan lingkungan dan pelayanan dasar memerlukan pemahaman yang mendalam terhadap karakteristik wilayah. Provinsi Jawa Timur, dengan keragaman kondisi antar Kabupaten/Kota, menjadi contoh penting dalam analisis ini. Pengelompokan wilayah dilakukan berdasarkan tujuh indikator, yaitu akses air minum layak, akses sanitasi layak, kepemilikan jamban, kasus diare, keluhan kesehatan, kepadatan penduduk, dan jumlah puskesmas. Metode Hierarchical Agglomerative Clustering (HAC) dan K-Means Clustering diterapkan untuk membentuk klaster wilayah yang homogen. Evaluasi performa klasterisasi menggunakan Silhouette Score, Calinski-Harabasz Index, dan Dunn Index menunjukkan bahwa HAC menghasilkan segmentasi yang lebih optimal. Analisis menghasilkan lima klaster wilayah dengan karakteristik berbeda: (1) kabupaten dengan kepadatan sedang, sanitasi terbaik, namun kasus diare dan keluhan kesehatan tinggi; (2) kabupaten dengan sanitasi rendah namun kasus diare dan keluhan kesehatan rendah; (3) kota dengan kepadatan sangat tinggi, sanitasi baik, namun fasilitas kesehatan terbatas; (4) kawasan metropolitan dengan kasus diare sangat tinggi akibat sanitasi buruk; (5) kabupaten dengan kepadatan rendah, akses air minum rendah, dan sanitasi cukup baik. Temuan ini memberikan dasar bagi pengembangan strategi intervensi kesehatan lingkungan yang lebih tepat sasaran.
Klasifikasi Tingkat Kesejahteraan Kabupaten/Kota di Jawa Barat, Jawa Tengah, dan Jawa Timur Menggunakan Regresi Logistik Multinomial: Klasifikasi Tingkat Kesejahteraan Kabupaten/Kota di Jawa Barat, Jawa Tengah, dan Jawa Timur Menggunakan Regresi Logistik Multinomial Firqi Nashrullah, Ahmad; Kresna Wira Yudha, I Nyoman; Terza Damaliana, Aviolla; Shindi Shella May Wara; Dwi Mahardhika, Rivaldi
Emerging Statistics and Data Science Journal Vol. 3 No. 3 (2025): Emerging Statistics and Data Science Journal
Publisher : Statistics Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/esds.vol3.iss.3.art23

Abstract

Tingkat kesejahteraan daerah menjadi salah satu indikator utama dalam menilai kemajuan Pembangunan wilayah. Penelitian ini bertujuan untuk mengklasifikasikan kesejahteraan seluruh daerah setingkat kabupaten dan kota yang berada di wilayah Provinsi Jawa Barat, Jawa Tengah, serta Jawa Timur berdasarkan kelompok Indeks pembangunan manusia yang terdiri atas empat kategori, yaitu rendah, sedang, tinggi, mdan sangat tinggi menggunakan regresi logistik multinomial. Analisis melibatkan persentase penduduk miskin, rasio ketimpangan, angka harapan hidup, pengeluaran per kapita, kepadatan penduduk, dan akses sanitasi layak. Data diperoleh dari Badan Pusat Statistik tahun 2023. Hasil deskriptif menunjukkan 69 wilayah termasuk kategori tinggi, 17 kategori sedang, dan 14 kategori sangat tinggi. Uji statistik mengonfirmasi hubungan signifikan semua variabel dan menunjukkan bahwa perbaikan akses sanitasi serta peningkatan harapan hidup meningkatkan indeks pembangunan manusia suatu wilayah. Model menghasilkan akurasi 86,67 persen. Hasil analisis ini dapat dimanfaatkan landasan objektif untuk menyusun strategi pembangunan wilayah yang efektif.
ANALYSIS OF EDUCATION FUNDING ALLOCATION AND STUDENT ENROLLMENT DIFFERENCES BETWEEN SMA AND SMK STUDENTS IN INDONESIA : RM MANOVA APPROACH Zahwa, Aniq Farichatus; Ramadhani, Dafinah; Wara, Shindi Shella May; Damaliana, Aviolla Terza
Parameter: Jurnal Matematika, Statistika dan Terapannya Vol 4 No 1 (2025): Parameter: Jurnal Matematika, Statistika dan Terapannya
Publisher : Jurusan Matematika FMIPA Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/parameterv4i1pp167-174

Abstract

The Indonesia Smart Program (PIP) is one of the government's efforts to improve access to education for underprivileged students. The purpose of this study is to examine how PIP educational aid was distributed and how successful it was in Indonesia in 2022 at the Senior High School (SMA) and Vocational High School (SMK) levels. The method used is Repeated Measures Multivariate Analysis of Variance (RM Manova) for education. The research data was obtained from the official government data portal of Indonesia (data.go.id). The results of the study do not show any significant differences in the distribution of assistance between SMA and SMK across various regions. Further research is needed to consider other factors that may have an impact.
Application of VAR-GARCH for Modeling the Causal Relationship of Stock Prices in the Mining Sub-sector Nasrudin, Muhammad; Setyowati, Endah; May Wara, Shindi Shella
Jurnal Varian Vol. 8 No. 1 (2024)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v8i1.4239

Abstract

Accurate modeling is expected to minimize risk and maximize profit in investment portfolios, one ofwhich is in stock price modeling. This research aims to model the causal relationship between stockprices using the Vector Autoregressive - Generalized Autoregressive Conditional Heteroskedasticity(VAR-GARCH) model. The VAR-GARCH model is used to overcome heteroscedasticity and modeldynamic volatility. The data used for the modeling consists of daily stock prices from July 2023 toMay 2024 for mining sub-sector companies listed on the Jakarta Islamic Index (JII), including ADMR,ADRO, and ANTM. The results showed that the VAR(1) model is stable, but this model indicates thepresence of heteroskedasticity or ARCH effects. Therefore, the VAR(1) model was combined with theGARCH model, and the results showed that the best model is VAR(1)-GARCH(1,1). The VAR(1)-GARCH(1,1) model is appropriate and meets the homoskedasticity assumptions for modeling the stockprices of the mining sub-sector in the Jakarta Islamic Index (JII). This indicates that the VAR-GARCHmodel could successfully handle the volatility of stock price data. In general, this research is in linewith previous research, i.e., the VAR-GARCH model showed a better model for capturing the volatilitypatterns in the data.
Analisis Sentimen Komentar Pengguna Terhadap Aplikasi Prime Video Di Google Playstore Dengan Pendekatan Machine Learning Pradipta, Alvino Hadiyan; Nugroho, Muhammad Rafli Feandika; Putri, Maretta Fairuz Luthfia Winoto; Wara, Shindi Shella May; Damaliana, Aviolla Terza
Buletin Sistem Informasi dan Teknologi Islam (BUSITI) Vol 6, No 4 (2025)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/busiti.v6i4.2856

Abstract

Analisis sentimen terhadap ulasan pengguna menjadi penting dalam memahami persepsi publik terhadap sebuah aplikasi digital. Analisis ini dilakukan untuk mengklasifikasikan 1000 komentar yang terdiri dari komentar positif dan negatif dari pengguna aplikasi Prime Video yang terdapat di Google Play Store. Tujuan penelitian ini adalah untuk membantu pengembang aplikasi memahami pendapat pengguna dalam jumlah besar secara otomatis, tanpa harus membaca komentar pengguna satu per satu. Tahapan awal dilakukan melalui proses pra pemrosesan teks, yang meliputi pembersihan data, normalisasi kata, case folding, stemming, dan filtering. Selain itu, visualisasi Word Cloud digunakan untuk mengidentifikasi kata-kata yang sering muncul dalam komentar pengguna. Analisis dilanjutkan dengan penerapan metode klasifikasi untuk menentukan sentimen komentar. Dalam penelitian ini, tiga metode pembelajaran mesin yaitu Neural Network (NN), Support Vector Machine (SVM) dan Naive Bayes Classifier (NBC) digunakan dan dibandingkan untuk memperoleh hasil klasifikasi terbaik. Hasil menunjukkan bahwa metode SVM memberikan tingkat akurasi tertinggi yaitu sebesar 89,5%, disusul dengan metode NN sebesar 87% dan NBC sebesar 75% dalam mengklasifikasikan sentimen komentar pengguna. Penelitian ini menyimpulkan bahwa pendekatan berbasis machine learning efektif digunakan dalam mengidentifikasi dan mengelompokkan opini pengguna terhadap aplikasi digital secara otomatis.
Segmentasi Faktor Perceraian berdasarkan Provinsi di Indonesia Tahun 2024 dengan K-Means dan DBSCAN Rizkiyah, Selly; Indira; Putri, Milla Akbarany Bakhtiar; Wara, Shindi Shella May; Saputra, Wahyu Syaifullah Jauharis
INDONESIAN JOURNAL ON DATA SCIENCE Vol. 3 No. 2 (2025): Indonesian Journal On Data Science
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Achmad Yani Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30989/ijds.v3i2.1654

Abstract

Divorce is a complex social phenomenon that continues to increase in Indonesia. Based on data from 34 provinces, divorce is influenced by various factors, both internal and external to the household. This research aims to describe the main factors causing divorce based on national data and review relevant literature using machine learning methods, especially unsupervised learning techniques in the form of clustering. The dominant factors found include constant disputes and arguments, economic problems, domestic violence, abandonment of one of the parties, and infidelity. This research uses K-Means and DBSCAN algorithms to compare the results. It is known that the best modeling with Silhoutte Score comparison is DBSCAN of 0.331. DBSCAN with optimal clusters was obtained from a combination of epsilon parameter 2.9 and minimum sample 2. The clustering results were then further analyzed to evaluate the data distribution and identify the dominant characteristics in each cluster. These findings indicate the need for a multidisciplinary approach in understanding and addressing divorce issues in Indonesia in order to reduce the divorce rate and improve the quality of family life.
Optimalisasi Deteksi Wajah Real-Time Menggunakan HAAR Cascade Classifier berbasis OpenCV Alfan Rizaldy Pratama; Muhammad Nasrudin; Andri Faudzan Adziima; Shindi Shella May Wara
JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) Vol. 7 No. 1 (2025): Juni 2025
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jasiek.v7i1.15485

Abstract

Nowadays, the face is one of the features that is widely used in various aspects of life such as security which includes access control and surveillance, biometrics which includes attendance systems, and many others. The obstacles found in implementing this are generally about speed performance when detecting, this is vital because if the process takes a long time, misconceptions and system errors will occur. HAAR Cascade Classifier is one of the most widely used lightweight face detection algorithms. In this research, by analyzing the use of grayscale color compared to RGB, a performance increase of 6.17% is obtained with an average FPS on RGB of 25.63 while on grayscale it is 27.21.
Detection of Ventricular Septal Defect in Pediatric Cardiac Ultrasound Videos Using Parasternal View and Faster R-CNN Nasrudin, Muhammad; Shindi Shella May Wara; Amri Muhaimin; Nur Indah Nirmalasari; Mega Rizkya Arfiana
Computer Engineering and Applications Journal Vol. 15 No. 1 (2026)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18495/comengapp.v15i1.1334

Abstract

Congenital heart disease (CHD), particularly ventricular septal defect (VSD), remains a major contributor to pediatric morbidity, while echocardiographic diagnosis is highly dependent on operator expertise and image quality. This study examines the feasibility of an object-detection-based intelligent imaging framework for localizing VSD in pediatric cardiac ultrasound videos acquired from the parasternal long-axis view. Rather than proposing a novel detection algorithm, this work adopts a system-oriented approach by evaluating the Faster R-CNN framework under practical clinical constraints, including limited annotated data and heterogeneous ultrasound characteristics. Three convolutional neural network backbones such as ResNet50, ResNet101, and Inception-ResNet V2 are comparatively analyzed within a unified detection pipeline. Experimental results indicate that the ResNet101-based model achieves the highest localization performance at an intersection-over-union threshold of 0.5, while ResNet50 provides more consistent precision across stricter localization thresholds. Although false-positive detections are observed in acoustically challenging frames, the proposed framework maintains real-time feasibility at approximately 7–8 frames per second. The findings offer practical insights into accuracy–efficiency trade-offs and backbone selection for the development of clinically aware intelligent echocardiography systems, supporting the application of information and communication technology in pediatric cardiac imaging.
Sistem Rekomendasi Menu Kantin Menggunakan Lifespan-Aware Association Rule Mining Dengan Hybrid Apriori Dan FP-Growth Navsih, Muhammad Ghinan; Muhaimin, Amri; Wara, Shindi Shella May
TEKNOLOGI: Jurnal Ilmiah Sistem Informasi Vol 16 No 1 (2026): January - on progress
Publisher : Universitas Pesantren Tinggi Darul 'Ulum (Unipdu) Jombang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26594/teknologi.v16i1.6143

Abstract

This study addresses the problem of how to systematically increase cross-selling in a small canteen, where additional items such as drinks and snacks are usually offered only based on the cashier’s memory and intuition. The proposed solution is a point-of-sale (POS) recommendation system that suggests complementary menu items in real time, based on patterns learned from historical transaction data. The system uses a lifespan-aware association rule mining approach with a hybrid of Apriori and FP-Growth, where both algorithms are applied to one-hot encoded POS data and their outputs are combined and validated before being deployed as recommendation rules. The research objectives are to extract stable co-purchase patterns from canteen transactions, compare the computational performance of Apriori and FP-Growth in this real-world setting, and evaluate the practical effectiveness of the resulting recommendation system. The method benchmarks Apriori and FP-Growth across several minimum support values in terms of frequent itemsets count, computation time, and peak memory usage, and then integrates the validated rules into a POS application for real-time inference. The system’s effectiveness is measured using a session-level recommendation acceptance rate, defined as the proportion of transactions that display the recommendation modal and result in at least one recommended item being accepted and paid. The results show that Apriori and FP-Growth consistently produce identical sets of frequent itemsets, but with markedly different computational characteristics: Apriori is significantly faster, while FP-Growth exhibits more stable memory usage. In the deployed setting, the recommendation system achieves a session-level acceptance rate of 15.52% in 3,588 transactions, indicating that roughly one in seven sessions with recommendations leads to an additional item being purchased. Compared to many existing works that focus only on algorithmic performance on benchmark datasets, this research contributes a lifespan-aware, empirically benchmarked hybrid ARM approach that is fully integrated into a working POS system and evaluated using real-world acceptance behavior.
Co-Authors AA Sudharmawan, AA Abda Abda Abdillah, Indah Rahma Adziima, Andri Fauzan Ahmad, Davin Anezta Alfan Rizaldy Pratama Alzam, Muhammad Arsyad Amellia Harmaimun Hidayah Amri Muhaimin Ananta, Aditya Putra Andri Faudzan Adziima Anugrah, Muhammad Cahya Raka Aviolla Terza Damaliana Damaliana, Aviolla Terza Diana Novitasari Dwi Mahardhika, Rivaldi Elmaliyasari, Shifa Endah Setyowati Fernando, Moch. Firman Firqi Nashrullah, Ahmad Indira Kaffi, Laisal Karina Auralia Kartika Maulida Hindrayani Khairunisa, Adenda Kresna Wira Yudha, I Nyoman Kurniawan, Muhammad Erlangga Mahardhika, Rivaldi Dwi Marthalia Kusumarima Maulana, Mohammad Hikmal Maulida Hindrayani, Kartika Mega Rizkya Arfiana Muhaimin, Amri Muhammad Nasrudin Muhammad Nasrudin Nabila Yudhitya Larasati Nashrullah, Ahmad Firqi Navsih, Muhammad Ghinan Nugroho, Muhammad Rafli Feandika Nur Indah Nirmalasari Pradipta, Alvino Hadiyan Pratiwi, Nanda Aulia Putri, Maretta Fairuz Luthfia Winoto Putri, Milla Akbarany Bakhtiar Putri, Milla Akbarany Baktiar rachmanto, Nugroho Fajar Ramadhani, Dafinah Rhomaningtias, Lina Rizkiyah, Selly Rizqin, Indira Zein Rusdiyanto, Nur Rahmat Saputra, Wahyu Syaifullah Jauharis Terza Damaliana, Aviolla Wahyu Syaifullah Jauharis Saputra Wiyono, Farhan Syah Putra Zahwa, Aniq Farichatus