He really cares about his student and grades so if you feel like you’re failing, email him and he’s gonna work with you. I didn’t do well on the midterm but I ended up with a A because changed the weight of the midterm

Very considerate and accommodating instructor and great class material. Grade was determined by two exams (50%) and six homework assignments (50%). Usually homework can be completed within 20 minutes. The midterms and finals consists of a few short-answer questions. Due to the nature of course content, the midterm was harder, but both was doable. Professor Gao also gave everyone more than enough time to complete the exams. He would start the exams early if he feels people may need extra time so it is recommended that you keep your schedule open 30 minutes to 1 hour before the class. He was super considerate and did not hesitate to give everyone As as long as they deserve it. Definitely a great class. I 100% recommend taking it with Professor Gao.

Professor Gao is a really smart man, but he is difficult to understand at times. He talks a bit too fast and his accent sometimes makes it hard to keep up with what he is trying to say. I relied heavily on the TA and discussion time to help me understand concepts because Gao did not explain them in an easy-to-understand way. There were about five homework assignments, a midterm, and a final— the workload was pretty light. There are no required readings, so as long as you take good lecture notes and go to discussion if you do not understand things, you will be fine. Professor Gao even says that it would be difficult to fail the course. The course material itself was interesting, but deeper concepts were quite complex. There is also quite a bit of probability statistics and light math that you will be doing throughout the course. Overall I would say take the course because it is definitely on the easier side and was kind of interesting.