Yongju Lee received the Ph.D. degree in information and communication engineering from the Korea Advanced Institute of Science and Technology (KAIST), South Korea, in 1997. He is currently a Professor at the School of Computer Science and Engineering, Kyungpook National University, Daegu, South Korea. He has published more than 100 papers in domestic and international conferences and journals. His current research interests include semantic web technology, artificial intelligence, knowledge graph, and big data.