Trading models for hedge fund: (1) applications of artificial intelligence and machine learning in quantitative trading; (2) quantitative trading strategy research: futures, stocks, options, bonds; (3) trading system development; (4) data science.

User behavior models for improving search experience: (1) train and validate search relevance models by big-data machine learning, predict out-of-sample performance; (2) design relevance metrics, perform AB tests to provide lift and statistical significance for decision making; (3) analyze time series, monitor search relevance long term improvements.

User personalization and business hub models for bankcard industry: (1) build data mining team; (2) build Hadoop big-data cluster, preprocess POS transaction data of Union Pay and feature engineering; (3) design machine learning algorithms and improve conversion rate.

Personalization models for mobile internet industry: (1) collect mobile user behavior data and feature engineering; (2) design recommender models to improve conversion rate for advertisement; (3) analyze and monitor performance of recommender system.

CMS (Compact Muon Solenoid) experiment at Large Hadron Collider at CERN. Special note: CMS is a winning team for 2013 Nobel Prize in physics.Web application development: (1) started the CMS Online Web-Based Monitoring (WBM) project from scratch since early 2006; (2) highly proficient in Java, C++ and SQL, wrote 100,000 lines of source code; (3) provide a vast amount of data (real-time, historical, correlation) in user-friendly manner; (4) my work is greatly loved by more than 3000 CMS scientists spread over 39 countries; (5) expertise on server side: Linux, Apache, Tomcat, Java Servlet, C++, JFreeChart, XML; (5) expertise on client side: HTML, CSS, JavaScript, AJAX, jQuery, JSON, HTML5 canvas.Data analysis in search for Higgs boson with an associated bottom quark: (1) first person at CMS to propose the analysis since 2008; (2) designed trigger to solve the challenging problem of reducing fakes at real-time data taking; (3) successfully built a team of five to optimize analysis using secondary vertex algorithm; (4) analyzed 1 P bytes of data using C++ and ROOT on CMS grid computing.

CMS (Compact Muon Solenoid) experiment at Large Hadron Collider at CERN.

CMS (Compact Muon Solenoid) experiment at Large Hadron Collider at CERN.

BES (BEijing Spectrometer) experiment: (1) upgraded power supply of solenoid magnet; (2) tested straw tube vertex detector for quality assurance; (3) wrote detector slow control code for temperature monitoring in C.