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All Journal Jurnal Sisfokom (Sistem Informasi dan Komputer) Zonasi: Jurnal Sistem Informasi JATI (Jurnal Mahasiswa Teknik Informatika)
Rizkyllah, Anabel Fiorenza
Unknown Affiliation
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Languange, Linguistic, Communication & Media

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PERBANDINGAN METODE NAÏVE BAYES DAN K-NEAREST NEIGHBOR TERHADAP ANALISIS SENTIMEN ULASAN PROGRAM MAKAN SIANG GRATIS DI INDONESIA Fathoni, Fathoni; Maretta, Aulia Pinkan; Kusuma, Aisha Nuraini; Sasmita, Ruth Mei; Rizkyllah, Anabel Fiorenza; Ibrahim, Ali
JATI (Jurnal Mahasiswa Teknik Informatika) Vol. 9 No. 4 (2025): JATI Vol. 9 No. 4
Publisher : Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jati.v9i4.14084

Abstract

Program Makan Siang Gratis di Indonesia sebagai kebijakan kontroversial memicu respons beragam di media sosial, sehingga analisis sentimen diperlukan untuk memahami persepsi publik secara komprehensif. Permasalahan utama terletak pada keterbatasan metode klasifikasi dalam menangani data teks informal, yang berpotensi membuat akurasi identifikasi menurun. Penelitian ini bertujuan membandingkan kinerja algoritma Naïve Bayes dan K-Nearest Neighbor (K-NN) dalam mengklasifikasikan sentimen ulasan masyarakat terhadap program tersebut. Sebanyak 2.080 komentar dari X (Twitter) dan YouTube dikumpulkan melalui web scraping, kemudian diproses dengan tahapan cleaning (penghapusan mention, URL), penghapusan stopwords, tokenisasi, dan transformasi fitur menggunakan TF-IDF. Dataset dibagi dengan rasio 60:40 untuk training dan testing, lalu dievaluasi menggunakan metrik akurasi, precision, recall, dan F1-score. Hasil penelitian menunjukkan Naïve Bayes mencapai akurasi tertinggi (87,75%), lebih unggul dari K-NN (86,67%). Kedua algoritma mencatat precision sempurna (100%), namun memiliki kelemahan dalam recall (NB: 18,4%; K-NN: 11,2%) dan F1-score (NB: 31%; K-NN: 20,1%), yang mengindikasikan kesulitan dalam mengidentifikasi sentimen positif. Penelitian ini membuktikan keunggulan Naïve Bayes dalam analisis sentimen kebijakan publik berbasis teks informal
PERBANDINGAN METODE NAÏVE BAYES, DECISION TREE, DAN KNN DALAM ANALISIS SENTIMEN APLIKASI GOJEK DI PLAYSTORE Maretta, Aulia Pinkan; Anadia, Qothrunnada Wafi; Sasmita, Ruth Mei; Epriyanti, Nadia; Rizkyllah, Anabel Fiorenza; Mariska, Inneke Via; Tania, Ken Ditha; Meiriza, Allsela
ZONAsi: Jurnal Sistem Informasi Vol. 7 No. 2 (2025): Publikasi artikel ZONAsi: Jurnal Sistem Informasi Periode Mei 2025
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/zjf8x279

Abstract

Sentiment analysis on user evaluation of Gojek application services on Play Store is important to understand user opinions on the services provided. This study compares three machine learning methods, namely Naïve Bayes, Decision Tree, and K-Nearest Neighbors (KNN) when categorizing user sentiment on Google Play Store as positive, negative, or neutral. The data processed comes from the Gojek user review dataset obtained from Kaggle. The analysis process involves data preprocessing (cleaning, stopword removal, tokenization, and split data), data transformation, and implementation of classification algorithms. The evaluation was carried out using accuracy, precision, recall, and F1-score metrics. The results of the study prove that Naïve Bayes has the best performance with an accuracy of 89%, followed by KNN (86%) and Decision Tree (84%). This study provides good insight for application developers in choosing the best method to understand user opinions and improve service quality.
Comparative Study of KNN and SVM Methods for Analyzing College Major Consistency Based on High School Background Rizkyllah, Anabel Fiorenza; Meiriza, Allsela; Hardiyanti, Dinna Yunika
Jurnal Sisfokom (Sistem Informasi dan Komputer) Vol. 14 No. 4 (2025): NOVEMBER
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32736/sisfokom.v14i4.2521

Abstract

Selecting a college major that aligns with students’ high school background is an essential factor in supporting academic achievement and career preparation. This study focuses on a comparative analysis of the Support Vector Machine (SVM) and K-Nearest Neighbor (KNN) algorithm ms in evaluating the consistency of college major selection. A dataset of 636 students was collected and processed for analysis. Model evaluation was performed using 5-Fold Cross Validation, in which the dataset was repeatedly partitioned into training and testing sets to ensure reliable and unbiased performance assessment. The results suggest that SVM demonstrates higher effectiveness, achieving average scores across precision, recall, F1-score, and accuracy of 85%. Meanwhile, KNN obtained average performance scores of 78%. These findings highlight that SVM provides better performance in analyzing the consistency between students’ high school majors and their chosen college majors. These findings also contribute to the development of decision support systems and counseling services to guide students in making more informed major choices.
Co-Authors Ali Ibrahim Allsela Meiriza, Allsela Anadia, Qothrunnada Wafi Dinna Yunika Hardiyanti Epriyanti, Nadia Fathoni Fathoni Ken Ditha Tania Kusuma, Aisha Nuraini Maretta, Aulia Pinkan Mariska, Inneke Via Sasmita, Ruth Mei