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Journal : Bulletin of Electrical Engineering and Informatics

Effect on signal magnitude thresholding on detecting student engagement through EEG in various screen size environment I Putu Agus Eka Darma Udayana; Made Sudarma; I Ketut Gede Darma Putra; I Made Sukarsa
Bulletin of Electrical Engineering and Informatics Vol 12, No 4: August 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v12i4.4850

Abstract

In this study, a new method was developed to detect student involvement in the online learning process. This method is based on convolutional neural network (CNN) as a classifier with an emphasis on the preprocessing process combined with a new feature in the form of signal magnitude area (SMA) thresholding. In this study, the data used as training data is a public dataset that emphasizes the decomposition of electroencephalography (EEG) signals into individual signal processing. Twenty subjects were taken to be used as test data, with each subject watching online learning lectures in the field of computer science on three different devices, either with a flat screen, a curved screen or a smartphone screen that is smaller than two standard computer monitors. Based on the study's results, it is known that the change in screen size is inversely proportional to the level of student attention, the smaller the screen, the lower the student's attention. For classification results, the model equipped with SMA thresholding outperformed the standard classifier by 8.33% with a test set of 20 people.
Enhance sentiment analysis in big data tourism using hybrid lexicon and active learning support vector machine Saraswati, Ni Wayan Sumartini; Ketut Gede Darma Putra, I; Sudarma, Made; Made Sukarsa, I
Bulletin of Electrical Engineering and Informatics Vol 13, No 5: October 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v13i5.7807

Abstract

Sentiment analysis is a review analysis process used to determine whether an opinion is neutral, negative, or positive. Sentiment analysis can be done using lexicon-based or machine learning-based approaches. Lexicon can perform sentiment analysis without training data because it is dictionary-based but performs worse than machine learning. Machine learning can perform well in completing sentiment analysis but requires training data so that the model does not experience underfitting. In the case of sentiment analysis on big data, manual labeling of training data is an inefficient job. Support vector machine (SVM) has the opportunity to be used together with the active learning (AL) method to make small training data but still have good performance. This research proposed a hybrid lexicon and AL-SVM method to complete sentiment analysis on big data tourism. This research used polarity from the valence aware dictionary and sentiment reasoner (VADER) lexicon as a reference for the query by user process from the AL-SVM to automate the sentiment analysis process on big data. The experimental results showed that using the hybrid lexicon and AL-SVM increased the sentiment analysis performance compared to the VADER lexicon, SVM, and lexicon SVM, which run separately.
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 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 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