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Mungkap Mangapul Siahaan
Universitas Internasional Batam
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Semi-Supervised Bullying Detection in Narrative Student Counselling Reports Using a Hybrid CNN-LSTM with Pseudo-Labelling Suwarno Suwarno; Muthia Andini; Mangapul Siahaan
Jurnal Informatika Vol. 13 No. 1 (2026): April
Publisher : Universitas Bina Sarana Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31294/ji.v13i1.11512

Abstract

Bullying incidents in schools are often documented in narrative student counselling reports containing informal language, emotional expressions, and contextual dependencies, which pose challenges for automated text classification, particularly under limited labeled data conditions. This study aims to develop a bullying detection model for narrative student counselling reports using a Hybrid CNN-LSTM architecture combined with a pseudo-labelling-based semi-supervised learning approach. The proposed model is trained through a two-stage process, consisting of pre-training on approximately 70,000 publicly available abusive-language texts and fine-tuning using 1,000 anonymized student counselling reports validated by guidance counsellors. Pseudo-labelling is employed to expand the training data while preserving domain relevance and adhering to ethical considerations. Experimental results show that the proposed model achieves an accuracy of 0.8698, a recall of 0.8570, and an F1-score of 0.7951. Although the precision value (0.7415) is relatively lower, higher recall is prioritized to reduce the risk of overlooking potential bullying cases in the school counselling context. Comparative analysis with Logistic Regression and Linear SVM indicates that the Hybrid CNN-LSTM model demonstrates more stable performance when processing longer narrative inputs that require contextual interpretation. This study contributes empirical evidence on the effectiveness of semi-supervised deep learning for bullying detection in low-resource, narrative student counselling data, a setting that remains underexplored in prior work.
Co-Authors , Loren Adi Ahmad Gunawan Ahmad Mawardi Lubis Aklani , Syaeful Anas Andik Yulianto Anita Panjaitan Anita Sitanggang Annisya Putri Nadhia Anton Luvi Siahaan Apriani Sijabat Ariq Bimantoro Balinda Oca Rosalia Basar Lolo Siahaan Bertaria Sohnata Hutauruk Canni Loren Sianturi Chandra, Jefriyanto Christian, Yefta Christopher Harsana Jasa Daniel Arnoldi Gultom Darius Angtony David Gordon Gultom Dedy Susanto Deli Dewi, Syasya Tri Puspita Edwards, John Eka Setiawati Eryc, Eryc Febri Yanti Firmansyah, Muhamad Dody Firmansyah, Muhammad Dody Fitri May Danthi Saragih Frank Lurich Gabriella Clarisa Silaban Glorya Natalia Rohani Napitupulu Gultom, Erwin Geovanis Hafizh akmal Haloho, Uci Nursanty Handyca Yeng Hansvirgo Hendi Che Heppy Theresia Sitompul Herna Febrianty Sianipar Herna Febrianty Sianipar Hisar Marulitua Manurung Hutagaol, Yevana Arthika Hutahaean, David Togi Hutahaean, Grace Saurma Indasari Deu Irene Adryana Nababan Jason Angelo Ong Jennifer Jennifer Jocelyn Jocelyn Julia Julia Justin Justin Kelvin Kelvin Kurniawan Kenidy, Ryan Kevin Anderson Kevin William Andri Siahaan Khomali, Carlos Justin Kristiani Siagian Kristina Vaher Leonita Maria E Manihuruk Liang, Suwarno Lie, Joen Lim, Tevin Lim, Vincent Lorenz, Chintya Manurung, Sri Maneni Marbun, Lastri Evati Mori Maret Ningsihermina Sihombing Maryanto Saragih Maulana, Azhar Meilani Sidabutar Melda Veby Ristella Munthe Melissa Valentino Rosiana Mely Christi Sihotang Mikhael Chendra Muhamad Dody Firmansyah Muhammad Dody Firmansyah Muhammad Ridho Alfarizi Muhammad Sulton Maulana Muthia Andini Nababan, Irene Adryana Nainggolan, Lonatasya Sevari Napitupulu, Selviana Novita Forena Simanungkalit Oktaviani, Katherine Oktavina Oktavina Pane, Eva Pratiwi PANJAITAN, MUKTAR B Partohap S. R Sihombing, Partohap S. R Partohap Sihombing Pasaribu, Sunggul Purba, Christian Neni Purba, Johannes Riscy Purba, Rudiarman Purba, Yoel Octobe Rendhika Adyatama Restu Maulana Nashuha Ricky Hartanto Rosalia, Balinda Oca Roy Valentino Chandra Ryan Kenidy Ryan Kenidy Sabariman Sabariman Sabariman Sabariman Sama, Hendi Samosir, Hottua Sanggam Magda Lasmaria Siahaan Sanggam Siahaan Satria Lim Sebastian, Rizky Setia Oktaviana Sirait Setiawan Joddy Siahaan, Basar Lolo Siahaan, Rina Devi Siahaan, Theresia Monika SIANTURI, TAMBOS AUGUST Sibagariang, Susy Alestriani Sibarani, Ega Putri Sani Sidabutar, Ropinus Sihombing, Santa R Silitonga, Immanuel Douglas Silvia Torong Simangunsong, Anita Debora Br. Simanjuntak, Fredian Simanjuntak, Harry Cristofel Simatupang, Leo Fernando Sinaga, Asima Rohana Sinaga, Asima Rohani Sinaga, Christa Voni Roulina Sinaga, Lambok Hasudungan Pratama Yuda Sinurat, Bloner Sirait, Esti Marlina Sirait, Jumaria Sirait, Setia Oktaviana Siska Natalia Situmeang Sitorus, Ester Sudy Sumiati Butar-Butar Sunarjo, Richard Andre Sunoto Suwarno Liang Suwarno Suwarno Suwarno Suwarno Syaeful Anas Aklani, Syaeful Syahputra, Bayu Syasya Tri Puspita Dewi Taai, Derwin Tamba, Dian Winda Tambunan, Betty Jeniari Tambunan, Marlina Agkris Terizla, Rizky Fredrin Tevin Lim Theresia Monika Siahaan Thesalonika, Emelda Tiarma Intan Marpaung Tiarma Marpaung Tjahyadi, Surya Toktar Kerimbekov TRI SUSANTI Vanessa, Nancy Vendhy Vendhy Vincent Octarian Vianto Wahid, Syahrul MuArif Wahyu Yudianto Wenky, Wenky Wijaya, Ricky Wijaya Wilson Wilson Yanti kristina Sinaga Yeng, Handyca Yeni Enjela Sianturi Yulsen Yulsen, Yulsen Zulkarnain Zulkarnain Zulkarnain