Morningside Campus/Limited Access

Effective immediately, access to the Morningside campus has been limited to students residing in residential buildings on campus (Carman, Furnald, John Jay, Hartley, Wallach, East Campus and Wien) and employees who provide essential services to campus buildings, labs and residential student life (for example, Dining, Public Safety, and building maintenance staff). Read More.

Day Yi

Lecturer, Applied Analytics; Associate Principal, Amazon

Day is an actuary by training and now runs a consulting practice focused on data technologies. His client list includes companies such as New York Life, Unilever, Morgan Stanley, and Bank of China. Prior to his consulting practice, he was a Senior Actuary at Memorial Sloan Kettering. He has also previously worked as an Actuarial Associate at Prudential, MetLife, Jefferson Pilot, and Genworth. 

 

Day’s passion for teaching has been a steady part of his work life. He has taught college-level math courses, trained corporate clients, and built his own online educational company. In 2021, he was selected as a finalist for Columbia’s Presidential Award for Outstanding Teaching. He has given talks at conferences and been invited to speak to various student organizations. Besides teaching, Day enjoys being a mentor to students looking to enter the data analytics profession.

Education

  • M.S., New Jersey Institute of Technology

  • B.A., Johns Hopkins University

Programs