Yelp Software Engineer, Data Mining, Search Team interview questions

Round 1: HR round for 15 minutes. Was asked chose the profile i wanted. I chose data mining. Round 2: Hacker Rank test. 10 simple technical questions (can be found on Glassdoor and one programming question) Round 3:Questions on data mining: I was given a brief about Yelp user page and the recommendations shown to the user based on his searches. A programming question (mentioned below) Round 4 and Round 5 were back to back skype interviews for 45 minutes. One of these interviews will be with the manager of the team you are being interviewed for. Round 4: Was given a brief about the Spam team. Few questions on the Spam Filtering Machine Learning project mentioned on my resume. One programming question.(mentioned below) Round 5: (With manager) Multiple questions on the machine learning projects mentioned on my resume and one programming question(mentioned below). You will asked to code on CoderPad for all the programming questions. Interviewers are nice and will ask follow up questions on the topics you are most comfortable with, so don't feel shy to tell them you are not comfortable on a certain topic. HR and technical recruiters are extremely co-operative. Good luck with your interview. :)