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All Journal Computatio : Journal of Computer Science and Information Systems JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Jurnal Sisfokom (Sistem Informasi dan Komputer) Jurnal Teknik Informatika UNIKA Santo Thomas JUTIM (Jurnal Teknik Informatika Musirawas) Kurawal - Jurnal Teknologi, Informasi dan Industri Jurnal Ilmiah Betrik : Besemah Teknologi Informasi dan Komputer Teknomatika (Jurnal Teknologi dan Informatika) Syntax: Journal of Software Engineering, Computer Science and Information Technology JTECS : Jurnal Sistem Telekomunikasi Elektronika Sistem Kontrol Power Sistem dan Komputer Jurnal Ilmu Komputer dan Informatika Bulletin of Information Technology (BIT) Brilliance: Research of Artificial Intelligence Jurnal Teknik Informatika Unika Santo Thomas (JTIUST) Algoritme Jurnal Mahasiswa Teknik Informatika Informatics and Enginering Dedication Jurnal Teknologi Sistem Informasi Jurnal Nasional Teknik Elektro dan Teknologi Informasi Agrivet: Jurnal Ilmu-ilmu Pertanian dan Peternakan DEVICE : JOURNAL OF INFORMATION SYSTEM, COMPUTER SCIENCE AND INFORMATION TECHNOLOGY Insand Comtech : Information Science and Computer Technology Journal Buletin Ilmiah Informatika Teknologi JOINTECOMS (Journal of Information Technology and Computer Science) MDP Student Conference Software Development Digital Business Intelligence and Computer Engineering Journal Information & Computer (JICOM) Jurnal Software Engineering and Computational Intelligence Applied Information Technology and Computer Science (AICOMS) JISCOMP (Journal of Information System and Computer) Journal of Informatics and Computer Engineering Research JuTISI (Jurnal Teknik Informatika dan Sistem Informasi)
Hafiz Irsyad
Universitas Multi Data Palembang
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Other

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Journal : Buletin Ilmiah Informatika Teknologi

 1 
Analisis Ulasan Pengguna Aplikasi Diagnosa Tanaman Di Play Store Menggunakan Naïve Bayes Hafizirsyad Irsyad; Akhsani Taqwiym
Buletin Ilmiah Informatika Teknologi Vol. 1 No. 2: Januari 2023
Publisher : AMIK STIEKOM SUMATERA UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.047 KB)

Abstract

Recognizing plant diseases requires very deep literacy so novice farmers feel reluctant to study agriculture. Agriculture 4.0 has been implemented in several countries, so beginners to farming don't need to worry anymore about agriculture 4.0. The plant disease diagnostic application can be downloaded on the Google Play Store and many reviews and comments from users. With so many reviews from existing comments, it becomes difficult to process them manually, even though there are ratings. In general, ratings are not necessarily in accordance with the contents of user reviews. Therefore, it is necessary to process the results of user reviews and be able to see user tendencies towards the application. The method used is Naïve Bayes. For data labeling, an Indonesian language expert is required who is labeled manually based on Indonesian knowledge and KBBI. Labeling is Positive, Negative and Neutral. The dataset obtained as many as 252 reviews. From the average test, it gets an accuracy value of 79%. Meanwhile, the Precision value is 100% positive sentiment, 76% for neutral sentiment and 77% for negative sentiment. The Recall value for positive sentiment is 37%, neutral sentiment is 100% and for negative sentiment is 100%. And the F1-Score itself has a positive sentiment of 56%, a neutral sentiment of 85% and a negative sentiment of 87%.
Analisis Topik Dominan Dalam Paper Ilmu Komputer Menggunakan TF-IDF Dan K-Means Laksana, Jovansa Putra; Shela, Shela; Irsyad, Hafiz; Rahman, Abdul
Buletin Ilmiah Informatika Teknologi Vol. 3 No. 3: Mei 2025
Publisher : AMIK STIEKOM SUMATERA UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58369/biit.v3i3.122

Abstract

The rapid growth of scientific publications in the field of computer science has created a need to understand the distribution and trends of emerging research topics. This study aims to identify and analyze dominant topics in computer science literature using a text mining approach based on Term Frequency–Inverse Document Frequency (TF-IDF) vectorization and the K-Means clustering algorithm. A total of 1,222 publication titles from Semantic Scholar (2020–2025) were processed through language normalization, text preprocessing, TF-IDF feature extraction, optimal cluster determination, and cluster quality evaluation using Silhouette Score and Davies-Bouldin Index (DBI). The results reveal that topics such as cybersecurity, artificial intelligence, and machine learning are the most prevalent. While some clusters show good internal cohesion, the overall evaluation yielded a Silhouette Score of 0.0585 and a DBI of 4.387, indicating overlapping topics and limited cluster separation. These findings suggest that although the TF-IDF and K-Means approach can highlight general topic trends, it has limitations in capturing semantic context. Future research is encouraged to explore more contextual representation and clustering techniques to improve topic analysis quality.
Penerapan Smart, Edas, Dan Cosine Similarity Dalam Rekomendasi Lowongan Pekerjaan Di Era Digital levid, Jonathan Felix; WIjaya, Daniel; Irsyad, Hafiz; Rahman, Abdul
Buletin Ilmiah Informatika Teknologi Vol. 3 No. 3: Mei 2025
Publisher : AMIK STIEKOM SUMATERA UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58369/biit.v3i3.128

Abstract

The rapid advancement of digital technology has increased the need for intelligent systems to filter job vacancies that match user profiles. This study aims to develop a job recommendation system based on a combination of Cosine Similarity, SMART, and EDAS methods. Job data were obtained from the JobStreet website and processed through text preprocessing stages such as tokenization, stopword removal, and stemming. Job descriptions and job seeker profiles were converted into numerical vectors using the TF-IDF method. Cosine Similarity was used to measure content similarity, SMART to evaluate suitability based on weighted criteria such as education and experience, and EDAS to assess alternatives relative to the average solution. System evaluation was conducted using precision, recall, F1-score, and mean Average Precision (mAP) metrics. Results show that Cosine Similarity alone had the lowest performance (F1-score 41.9%, mAP 42.3%), improved with the addition of SMART (F1-score 51.1%, mAP 50.9%), and achieved the best results with the integration of Cosine Similarity and EDAS (F1-score 66.5%, mAP 65.8%). Therefore, the integration of text similarity and multi-criteria decision-making methods effectively enhances the accuracy and relevance of job vacancy recommendations.
Co-Authors Abdul Rahman Adrian Suparto Ahmad Farisi Akhsani Taqwiym Akhsani Taqwiym Akhsani Taqwiym Akhsani Taqwiym Andreas Andreas Antony, Felix Arta Tri Narta Arta Tri Narta Aurelia, Reni Billy Franko Busdin, Rusdie Candra candra Chandra Wijaya Chandra, Kelvin William Christy, Christy Cindy Meilani Daniel Wijaya Derry Alamsyah Devella, Siska dewa Dicko David K Dina Mariana Dwifa_Sophian, Muhammad Agus Edward Pratama Eka Puji Widiyanto Fareza, Ivan Farisi, Ahmad Farisi, Ahmad Fariz Prasetya Ferdi Jiranda Sinaga Fernando Sugianto Putra Fujianto Graciela, Michelle Hansen, Hansen Hartati, Ery Hendra Nata Niko P Hidayat, Muhammad Syahrizal Ibnusina, Fedri Ivander Destian Luis Jeason Lie Jocelyn, Jennifer jonathan stanly Jonathan Wijaya Juliana Nasution Kamilah, Nyimas Nisrinaa Kelly, Angel Kevin kevin Kevin Kevin Kotan, Jendraja Husein Kurniawan, Calvin Laksana, Jovansa Putra Leonardo Leonardo Lestari, Yehezekiel Gian levid, Jonathan Felix Lin, Jimmi M Ezar Al Rivan Meiriyama, Meiriyama Michael Joy Clement Molavi Arman Muhammad Bemby Putra Mansyah Muhammad Rizky Pribadi Mutia, Silvi Narta, Arta Tri Nicholas Wilyanto Novan Wijaya Novan Wijaya Novan Wijaya Novan Wijaya Pribadi, M Rizky Putra Darmansius, Albertus Dwi Andhika Renaldo, Florence Reynald Dwika Prameswara Rikky, Rikky Rizki Ambarwati RR. Ella Evrita Hestiandari Russel Wijaya Santoti, Jennifer Velensia Sanu, Intan Saputra, M Reynaldi Shela, Shela Silfia Taqwiym, Akhsani Taqwiym, Akhsani Taqwiym, Akhsani Tinaliah, Tinaliah Triana Elizabeth, Triana Verrino Adityya Virginia, Callista Wati, Retiana Krisna Wati, Risha Ambar Wijang Widhiarso Wijaya, Christian Richie Willyanto, Aldo Wiwik Handayani Wong, Jeovanni Yohannes Yohannes Yunarto Yunarto, Yunarto