LG Electronics Research Engineer interview questions

Online Coding Test had 3 problems but if you can solve 2 of them, I think they let you pass. 1st round of interview: They asked about my research project and my skills and my research area. 2nd round of interview: They asked about my paper and what are the strengths and how I would improve it. 3nd round of interview with HR: They asked me how would I describe my self in word, What are my strengths and weakness, Have you had any difficulties in school. Final interview with HR and Senior Engineer: I told them about my research project and how my research would fit to the company. But I think they did not like my research.

about my research and a lot of personal questions