in Cloud Computing related team. Add backend contacts module inEasyMeeting application（Cooperation Cloud Product in CityCloud Inc.）, improve somerelated backend Technology such as Spring/SpringMVC/Mybatis/Myql/Mongodb and so on.Add async Servlet technology for query optimization. 2014.3-2014.8 Alibaba Bigdata recommendation algorithm Contest, Ranking29, Top 0.5%. More than 16 countries, 7276 teams, 10000 people participants, thecontest’s data is about 4 months user… Show more in Cloud Computing related team. Add backend contacts module inEasyMeeting application（Cooperation Cloud Product in CityCloud Inc.）, improve somerelated backend Technology such as Spring/SpringMVC/Mybatis/Myql/Mongodb and so on.Add async Servlet technology for query optimization. 2014.3-2014.8 Alibaba Bigdata recommendation algorithm Contest, Ranking29, Top 0.5%. More than 16 countries, 7276 teams, 10000 people participants, thecontest’s data is about 4 months user behavior data with more 570 million entries,10 Millionusers and 30 thousands brands. Our task is to design recommendation algorithm for brandsrecommendation in Alibaba distributed ODPS platform. I am primarily responsible for modeldesign, features extraction, model optimization and evaluation. Show less