I told him about my experiences in natural language processing, and it seems like he did not understand what NLP is as I had to explain the greater details of NLP. I also had to explain some of the projects that I have done with LDA. The interviewer did not understand LDA neither. I was bit frustrated as the interviewer did not understand the details of machine learning. It was quite frustrating experience. The technical competency of the interviewer was quite low. Generally, the interviewer was not very professional, and it seems like he did not have mass knowledge in artificial intelligence and machine learning.