Investigated the behaviors of users with the logs of video recommendation to 400,000 video bloggers.Lead in making of strategies in overseas video platform regarding recommendation and interface for 500k users.Evaluated the effectiveness of lately-online product and algorithm with multi-dimension analytical skills.Developed logistic regression, Personal Rank and LDA algorithms in C++ to boost the recommendation performance by 50%.Adjusted Natural Language Processing (NLP) parsing by Stanford NER, enhanced the recommendation performance by 50%.Tested various Data Mining algorithms like PageRank, K-Means and Bayes on Python and execute the experiments.Built the Data Monitor and MySQL database of lately released Galaxy system using GoLang, with 10 million daily videos.