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Yunidar
Universitas Tadulako Jalan Soekarno Hatta, Tondo, Mantikulore, Kota Palu, Sulawesi Tengah
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MEWT-Enhanced EEGNet for ASD EEG Classification: Performance Evaluation with k-Fold Cross-Validation Fathur Rahman, Imam; Melinda, Melinda; Yunidar, Yunidar; Basir, Nurlida; Rafiki, Aufa
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 8 No. 1 (2026): February
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijeeemi.v8i1.313

Abstract

Accurate and reliable classification of autism spectrum disorder (ASD) from electroencephalography (EEG) signals remains challenging due to the inherently nonstationary, nonlinear, and multichannel nature of EEG data. These properties complicate the extraction of discriminative features that are both stable and computationally efficient. To address this challenge, this study proposes a compact deep-learning pipeline that integrates the Multivariate Empirical Wavelet Transform (MEWT) with EEGNet for ASD–EEG classification. MEWT decomposes multichannel EEG signals into spectrally aligned subbands while preserving inter-channel relationships. The resulting MEWT-based features are then processed by EEGNet, a lightweight convolutional neural network specifically designed for EEG-based learning tasks. Performance was evaluated using 5-fold cross-validation. The proposed MEWT with the the EEGNet model achieved a mean test accuracy of 98.35%, with consistently high precision (98.23%), recall (98.45%), F1-score (98.34%), and specificity (98.24%) across all folds. Confusion-matrix results indicated very few and well-balanced false positives and false negatives, supporting stable discrimination between ASD and control EEG segments. A one-sample one-tailed t-test against a 50% chance level confirmed that all evaluated metrics were significantly above chance (p < 0.0001). When benchmarked against previously reported results on the same dataset, the proposed approach slightly improved upon EMD with EEGNet (97.99%) and clearly outperformed EWT with EEGNet (95.08%), suggesting that MEWT-derived multichannel features are well matched to compact convolutional architectures for ASD–EEG analysis. Despite these strong results, the study is limited by a small, single-site cohort and the use of a single deep-learning model. Future work will focus on standardized retraining across multiple feature families and validation on larger and more diverse populations to further assess robustness and generalizability
Penerapan Storytelling sebagai Kreativitas Berbicara Siswa SMP Yunidar, Yunidar; Tahir, Muh; Alit Suputra, Gusti Ketut; Efendi, Efendi; Halifah, Nur
SAWERIGADING Vol 31, No 2 (2025): Sawerigading, Edisi Desember 2025
Publisher : Balai Bahasa Sulawesi Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26499/sawer.v31i2.1634

Abstract

This study aims to determine the effectiveness of implementing the storytelling method as a means of developing creativity in the speaking skills of eighth-grade students at SMP Negeri 12 Sigi. The study used a quantitative descriptive approach, with data collection techniques including tests (pre-test and post-test), observation, and documentation. The tests were used to measure improvements in students' speaking skills in the aspects of title and content, expression, pronunciation, gesture, creativity, and interaction. Data analysis was conducted by comparing the pre-test and post-test results using a numerical scoring speaking skills assessment rubric. The results showed that the storytelling method significantly improved students' speaking skills and creativity. Before the implementation, most students were in the Poor category, especially in expression and intonation. After the implementation, 50% of students were in the Good category and 40% in the Very Good category, with the most significant improvements in expression, gesture, and interaction. Thus, storytelling has proven effective as an innovative Indonesian language learning method that can increase students' activeness, creativity, and self-confidence. AbstrakPenelitian ini bertujuan untuk mengetahui efektivitas penerapan metode storytelling sebagai sarana pengembangan kreativitas dalam keterampilan berbicara siswa kelas VIII SMP Negeri 12 Sigi. Penelitian menggunakan pendekatan deskriptif kuantitatif dengan teknik pengumpulan data melalui tes (pre-test dan post-test), observasi, dan dokumentasi. Tes digunakan untuk mengukur peningkatan keterampilan berbicara siswa pada aspek judul dan isi, ekspresi, pelafalan, gestur, kreativitas, dan interaksi. Analisis data dilakukan dengan membandingkan hasil pre-test dan post-test menggunakan rubrik penilaian keterampilan berbicara berbasis skor numerik. Hasil penelitian menunjukkan bahwa penerapan storytelling secara signifikan meningkatkan keterampilan berbicara dan kreativitas siswa. Sebelum penerapan, sebagian besar siswa berada pada kategori Kurang, terutama dalam aspek ekspresi dan intonasi. Setelah penerapan, 50% siswa berada pada kategori Baik dan 40% pada kategori Sangat Baik, dengan peningkatan paling menonjol pada aspek ekspresi, gestur, dan interaksi. Dengan demikian, storytelling terbukti efektif sebagai metode pembelajaran inovatif Bahasa Indonesia yang mampu meningkatkan keaktifan, kreativitas, serta rasa percaya diri siswa.
Co-Authors . Roslidar Abdul Kamaruddin Acula, Donata D Acula, Donata D. Ade Nurul Izatti G. Yotolembah Akbar Akbar Akbar, Muhazir Al Bahri Alfariz, Muhammad Fauzan Ali Karim Ali Karim Ali Karim Alit Suputra, Gusti Ketut Amalia Amalia Aman Aman Amrie Firmansyah Andi Safutra Suraya Anizar, Lis Arini Nurazizah Arum Pujining Tyas Arum Pujiningtyas Asniar Asniar Asrianti, Asrianti Azhari, Rizki Aziz, Zulfadli Abdul Azra, Ery Bashir, Nurlida Basir, Nurlida Christi L., Rita Cindy Afitasari D Acula, Donata Darmawan Darmawan Daud, Bukhari Dian Safitri Dwi Yunita Efendi Efendi Elfalini Warnelis Elizar Elizar, Elizar Fahmi Fahmi Farhan Fathur Rahman, Imam Fathurrahman Fathurrahman Fauzan, Arfan Fauziah Gusvita Syarah Femmy Jacoba Ferdi Nazirun Sijabat, Ferdi Nazirun Ferdinand, Frans Firdaus, Ferroz Fitri Arnia Gazali Lembah Ghimri, Agung Hilm Golar Golar Gopal Sakarkar Gusti Alit Saputra Gusti Alit Suputra Gusti Ketut Alit Suputra Harisa, Sitti Hasan, Hafidh Hasan, Vania Pratama Hasriani Muis Heltha, Fahri Herlina Dimiati, Herlina Hidayat Hidayat I Gusti Ketut Alit Saputra I Ketut Agung Enriko I Made Sukanata Ida Nuraeni Indarwati , Retno Indra Indra Indrakesuma Irdawati Irdawati Islamy, Fajrul Ivana, Farah Jayanti Puspita Dewi Joko Pitoyo Jumeil, T Muhammad Juniati Juniati Karlisa Priandana Khairah, Alfita Khairia, Syaidatul Khairunnisa Bakari Khairunnisa Bakari Laguliga, Syapril A. Lailatul Qadri Zakaria Lantuba, Yanis Men Leo, Hendrik Luluk Khusnul Dwihestie M Asri B M. Asri B Malahayati, M. Masyithah, Syarifah Mauli Maulida, Zenitha Maulisa, Oktiana Melinda Melinda Miftahujjannah, Rizka Mina Rizky, Muharratul Moh Tahir Moh. Tahir Moh. Tahir Mohd. Syaryadhi Mohd. Syaryadhi Muhammad Irhamsyah Muhammad Muhammad Muhammad Ridwan Muna, Lia Aulial Mursidin . Muthia Aryuni Muttaqin, Ikram Nabila, Nissa Hasna Nasaruddin Nasaruddin Nazilla, Izza NFN Nursyamsi NFN TAMRIN Nirmayanti, Nirmayanti Nizam Salihin Nur Ahyani Nur Fadilah Nur Halifah Nur Halifah, Nur Nur'aeni, Ida Nuraedah Nurbadriani, Cut Nanda Nurbaya Nurbaya, Nurbaya Nurbismi, Nurbismi Nurlida Basir Nurrahmad, Nurrahmad Nursyamsi Nursyamsi Oktiana, Maulisa Pandaleke, Alex Y. Pertiwi, Rizqina Wahyu Laras Putri Mauliza, Putri Qadri Zakaria, Lailatul Rafiki, Aufa Rafiqi, Ashaf Rahmatika, Laily Raihan, Siti Ramadani, Nurhaliza Ramadhan, Irsyan Ramadhani, Hanum Aulia Ramdhana, Rizka Ramli, Muhammad Ridha Rhamdhani, Rhamdhani Ridara, Rina Rini Safitri Roslawa, Roslawa Sabiran, Sabiran Sadia, Fachrudin Saharudin Barasandji Sahrul Saehana Sakarkar, Gopal Salsabila, Unik Hanifah Samad, Muhammad Ahsan Santi Santi Sarmin Sarmin Sarmin Sarmin Satria Satria, Satria Setiawan, Verdy Siti Fatinah Siti Rusdiana Sitti Harisah Sri Jelis Suci Rahayu Suharja, Anggi Auliyani Sukma, Sukma Suyanda, Arya Syahyadi, Rizal Syakir, Fakhrus Syamsuddin Syamsuddin Tahir, MUH Tamrin Tamrin Tamrin Tamrin Tanjung, Wilda Nurafdila Tiara Artamefia Ulfah Ulinsa, Ulinsa Ulinsa, Ulinsa Ulul Azmi Vilzati, Vilzati Wachidi, Achmad Wahyuni, Silvya Dwi Wardana, Surya Wong, W.K Wong, W.K. Yazid Yaskur Yudha Nurdin Yusni, Y Yuwaldi Away Zainab Zainal, Zulfan Zulfikar Taqiuddin Zulhelmi, Zulhelmi Zulianto, Sugit