Abdulrazak Yahya is a lecturer at the Faculty of Cognitive Sciences and Human Development Universiti Malaysia Sarawak (UNIMAS). He received his PhD from Universiti Teknologi Malaysia, MSc and BSc from University of Science and Technology, Yemen. His research is mainly in the cognitive science, artificial intelligence, neural networks, spiking neural networks, brain modelling, optimization methods, multi-objective optimization algorithms and machine learning techniques and their applications. The current focus of his research is on deep learning applications and challenges in big data analytics.