Dr. Hoang Long Nguyen is a researcher in Vestlandsforsking since September 2019. He received B.S. (2013) in Department of Computer Engineering from Ho Chi Minh City University of Technology, Vietnam. He received M.S. (2015) and Ph.D. (2018) in Department of Computer Engineering from Yeungnam University and Chung-Ang University in South Korea, respectively. He was a Postdoctoral researcher in Chung-Ang University, South Korea from December 2018 to August 2019. His research topics include knowledge engineering on social networks by using machine learning, semantic web mining, and ambient intelligence.