Yelp Intern - Software Engineer interview questions

I was contacted by a recruiter after applying online. Had a initial phone screen with the recruiter. It was quite easy. I was asked some basic CS questions all of which are already discussed here. After that in about about a week after phone screen, I had a skype interview of 45mins with a Software Engineer. No behavioral questions were asked. I was patched with a Data-mining engineer and all questions were based on that. Eg. machine learning,various techniques , what will you do will the large dataset of yelp and ended with a coding question which was based on machine learning.

Applied through campus recruiting. Got a call back a few weeks later for a phone interview