Hanlin Zhang is a PhD student at UNC-CH School of Information and Library Science at UNC School of Information and Library Science. Colleagues describe them as "To Whom It May Concern, I’m writing to express my wholehearted support for Hanlin's application to the position. As his supervisor of Budlab data analyst internship since May 2017, I've seen clearly about his comprehensive qualities that make him easy to work with; and I have no doubt that he can contribute substantially to your program. During his internship, he participates in developing promotion optimization mechanisms, which I believe involved a wide range of knowledge in analytics, such as price forecasting, time series analysis and optimizations. Hanlin has showed a solid theoretical foundation and his knowledge is flexible applied to each field he participates in. Further, he has enough programming skill to finish his job, he used to complete his assignments on time so that I was, and certainly am, confident enough to assign him more complicated developing tasks. I, therefore, highly recommend him and with him the very best in all future endeavors. "