Li, Zizhu, Chengyuan Shen, Liangyu Zhao, Taiyo Maeda, and Jianting Cao. “Real-Time Positive Emotion Recognition Using the Positive Unlabeled Learning Method in a Brain Computer Interface System”. INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 25 (November 4, 2025): 88–99. Accessed December 5, 2025. https://www.rajpub.com/index.php/ijct/article/view/9810.