David Rogers is currently pursuing the Ph.D. degree with the School of Computer Science and Informatics, Cardiff University, Cardiff, U.K. His Ph.D. thesis was titled Text Mining of Extremist Narratives on the Web. He is currently a Research Assistant with Cardiff University. He was involved in a number of EC-funded projects focused on supporting heterogeneous workflow application infrastructure. He is now applying his interest in Big Data and the Semantic Web to his current interdisciplinary work within the Crime and Security Research Institute.