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Comparison of Gain Ratio and Chi-Square Feature Selection Methods in Improving SVM Performance on IDS Ricky Aurelius Nurtanto Diaz; I Ketut Gede Darma Putra; Made Sudarma; I Made Sukarsa; Naser Jawas
Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 15 No. 01 (2024): Vol. 15, No. 01 April 2024
Publisher : Institute for Research and Community Services, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/LKJITI.2024.v15.i01.p06

Abstract

An intrusion detection system (IDS) is a security technology designed to identify and monitor suspicious activity in a computer network or system and detect potential attacks or security breaches. The importance of accuracy in IDS must be addressed, given that the response to any alert or activity generated by the system must be precise and measurable. However, achieving high accuracy in IDS requires a process that takes work. The complex network environment and the diversity of attacks led to significant challenges in developing IDS. The application of algorithms and optimization techniques needs to be considered to improve the accuracy of IDS. Support vector machine (SVM) is one data mining method with a high accuracy level in classifying network data packet patterns. A feature selection stage is needed for an optimal classification process, which can also be applied to SVM. Feature selection is an essential step in the data preprocessing phase; optimization of data input can improve the performance of the SVM algorithm, so this study compares the performance between feature selection algorithms, namely Information Gain Ratio and Chi-Square, and then classifies IDS data using the SVM algorithm. This outcome implies the importance of selecting the right features to develop an effective IDS.
Rancang Bangun Aplikasi Pencatatan Keuangan dan Simulasi Investasi Berbasis Web I Made Rian Suputra; I Made Sukarsa; Anak Agung Ketut Agung Cahyawan Wiranatha
Reslaj: Religion Education Social Laa Roiba Journal Vol. 7 No. 10 (2025): RESLAJ: Religion Education Social Laa Roiba Journal
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/reslaj.v7i10.9443

Abstract

Accurate financial recording and effective investment management are essential for optimizing the use of financial resources, identifying spending patterns, and maximizing investment growth. The aim of this research is to assist users in managing daily income and expenses, as well as to support decision-making in financial investments. Therefore, it is necessary to develop an application that offers practical solutions for financial recording and investment management. The financial recording and investment simulation application is developed using the Laravel Framework with the waterfall development method. The programming language used is PHP, and the database is MySQL. Application testing was carried out using Black Box Testing to verify functionality and Stress Testing to evaluate system performance and resilience. The Stress Testing scenario involved 100 samples with a ramp-up period of 10 seconds and a loop count of 1, testing one of the API endpoints, namely the news endpoint. The results of the Black Box Testing indicate that the application successfully performs the expected scenarios, and the Stress Testing results show that the application demonstrates adequate resilience under high workload conditions.
Recency, frequency, quality: novel feature from sentiment analysis for clustering and ranking in tourism big data analytics Saraswati, Ni Wayan Sumartini; Putra, I Ketut Gede Darma; Sudarma, Made; Sukarsa, I Made; Aristamy, I Gusti Ayu Agung Mas
Bulletin of Electrical Engineering and Informatics Vol 15, No 2: April 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i2.10709

Abstract

Understanding tourist perceptions has been a key benefit of sentiment analysis in tourism data. However, its outcomes can be further utilized to gain insights into the characteristics of tourist attractions and hotels. This study aims to develop a new feature, called recency, frequency, quality (RFQ), derived from sentiment analysis results to cluster and rank tourist attractions and hotels in Bali. RFQ consists of three components: review recency, review frequency, and review quality. These dimensions reflect the recentness of reviews, the popularity based on the number of reviews, and the review quality measured by the ratio of positive to negative sentiment polarity. Using big data analytics through clustering and ranking, the study finds that the quality of tourist attractions and hotels is primarily concentrated in Badung and Gianyar regencies. More tourist attractions are found in the silver cluster than in the gold, indicating the need to enhance quality. In the hotel sector, the diamond cluster dominates among star-rated hotels, suggesting overall high quality. Budget hotels show fairly good quality, with most falling under the gold cluster.
Co-Authors A.A Primaningrat Gita Puspita A.A. Istri Alit Dwi Purnamaningrat Agus Aan Jiwa Permana Ahmad Budi Setiawan Ahmad Hanafi Anak Agung Ketut Agung Cahyawan Anak Agung Ketut Agung Cahyawan Wiranatha Anak Agung Ketut Agung Cahyawan Wiranatha Anak Agung Kompiang Oka Sudana Anak Agung Ngurah Aditya Winata Anak Agung Ngurah Hary Susila Anastia petika Andreyana, Putu Veda Anindya Santika Devi Antara, I Kadek Ari Melinia Aristamy, I Gusti Ayu Agung Mas Arsa, Dewa Made Sri Arya Utama, I Putu Juliarta Arynasta, I Putu Krisna Ayu Wirdiani Bambang Wahyudi Buana, I Putu Wira Candra, I Putu Wijaya Adi Christine Regilia Suwu Cristianto, Cevin Wahyu Defri Gentia Deria Dwi Antari Desak Made Novita Deshiwa Budilaksana Dewa Agung Krishna Arimbawa P Dewa Ayu Indah Cahya Dewi Dewa Komang Mahardika Dewi, Ni Putu Ari Sinta Dharma Krisna Putra, Kadek Dharmawan, K. Panji Dicky, Devtian Dina Wahyuni Puteri Duman Care Khrisne Dwi Putra Githa Dwi Rusjayanthi, Dwi Dwipayana, Ida Bagus Alit Fajar Firmansyah Fatmawati Fatmawati Febe Niken Damayanti G M Arya Sasmita Gede Anantaswarya Abhisena Gede Suryawan, Gede Gunawan, I Kadek Gunawan, I Putu Gus Arisna, I Wayan Gusti Agung Ayu Putri Hary Susila, Anak Agung Ngurah I Gede Aditya Nugraha I Gede Bagus Premana Putra I Gede Bagus Premana Putra I Gede Sugita Aryandana I Gede Sumiarta Adinata I Gede Wira Yudha Lesmana I Gusti Agung Oka Widiarsana I Gusti Made Satriya Wibawa I Gusti Ngurah Wira Dharma I Kadek Ari Melinia Antara I Kadek Gunawan I Kadek Owen Nirvana Kaskora I Kadek Teo Prayoga Kartika I Ketut Adi Purnawan I Ketut Gede Darma Putra I ketut Gede Darma Putra I Ketut Gede Darma Putra I Ketut Suweca, I Ketut I Komang Surya Nata Negara, I Komang Surya I Made Agus Dwi Suarjaya I Made Budi Sentana I Made Indrayana, I Made I Made Oka Widyantara I Made Rama Pradana I Made Rian Suputra I Made Sunia Raharja I Made Sunia Raharja, I Made Sunia I Made Suwija Putra I Made Wahyu Saputra I Nyoman Piarsa I Nyoman Satria Paliwahet I Putu Ade Ambara Putra I Putu Agastya Harta Pratama I Putu Agung Bayupati I Putu Agus Eka Darma Udayana I Putu Agus Eka Darma Udayana, I Putu Agus Eka I Putu Arya Dharmaadi I Putu Arya Dharmadi I Wayan Wahyu Gautama Ida Ayu Putu Wipra Astiti Ida Bagus Ananda Paramartha Indra Dwi Cahya Setyawan Jo, Minho Juli Astuti, Ni Putu Kadek Alit Sudiyana Kadek Ayu Fitri Aryanti Kadek Suar Wibawa Kadek Wahyu Mega Duta Kadek Yartono Ketut Gede Darma Putra, I Ketut Yudhi Mahartha Komang Budiarta Kristiani Br Munthe Kurniawan, Laurensius Adi Kusnanda, I Gede Ryoga Laurensius Adi Kurniawan Lie Jasa Linggar Sukarta, Erlangga Bayu Made Kembar Sri Budhi Made Sudarma Made Sudarma Made Sudarma Mahaputra, Pande Bagus Narendra Mahayasih, Ni Putu Putri Chintyadewi Mahendra, Wayan Dony Minho Jo Minho Jo Muhammad Febrian Rachmadhan Amri Naser Jawas Naser Jawas Ngakan Nyoman Pandika Pinata Ni Kadek Ayu Anggraeni Ni Kadek Yuliastin Ni Luh Gede Pivin Suwirmayanti, S.Kom, MT, Ni Luh Gede Pivin Ni Made Ayu Krisna Cahyadi Ni Made Ika Marini Mandenni Ni Made Suasti Wulanyani Ni Nyoman Yoni Try Jayanti, Ni Nyoman Ni Nyoman Yuliarmi Ni Putu Sutramiani Ni Wayan Wisswani Ni Wayan Wisswani Ni Wayan Wisswani Ni Wayan Wisswani Nugraha, Putu Tulus Nur, Adji Mochamad Nyoman Putra Sastra Pradipta, Oka Ananta Pranata, I Nyoman Krisna Prasetyo, Ryan Teguh PRAWIRA, I WAYAN KARANG YUDHA Puteri, Dina Wahyuni Putra Pinajeng, I Kadek Trio Putra, I Made Suwija Putra, Krishna Mahendra Putri Shinta Dewi Putu Gede Arya Sumertha Yasa Putu Gede Arya Sumertha Yasa Putu Oka Yudiantara Putu Putri Wrestra Saridewi Putu Satya Saputra Putu Wira Buana Redemta Bunga, Redemta Ricky Aurelius Nurtanto Diaz Ricky Aurelius Nutanto Diaz, Ricky Aurelius Rika Hari Wahyuni Riza Afriza Islami Rocky Oktaviano Rukmi Sari Hartati Rusjayanthi, Ni Kadek Dwi Sang Made Muryawan Santiari, Desak Made Saputra, Gede Rizky Chandra Saraswati, Ni Wayan Sumartini Sri Ambar Pratiwi Suarnata, I Gede Sudana, A.A. Kompiang Oka Sunia Raharja, I Made Susila, Anak Agung Ngurah Hary Sweta, I Nyoman Umbaraditha, Kadek Satria Utama, I Putu Juliarta Arya Wayan Dony Mahendra Wirayuda, I Made Bagus Surya Wisswani, Wayan Yudi Pratistha, Pande Made