Alex Niu has over 8 years of experience in financial industry serving large banks in the area of risk management using advanced analytics. As the director of Decision Science at American Express, Alex was involved in developing and implementing machine learning based solution for both credit assessment and fraud detection. He also led efforts to build machine learning models for credit line assignment for American Express portfolios. Prior to American Express, Alex served as a consultant to top financial institutions. Alex currently serves as a Solution Data Scientist, Banking & Financial, for DataVisor. DataVisor provides big data fraud detection solution utilizing unsupervised analytics. Its unique approach to big data fraud detection does not rely on prior knowledge of attack patterns. Alex holds a master's degree in Electrical & Computer Engineering from Cornell University, and a bachelor's degree from Nanyang Technological University.