Lead a LBS and O2O data mining team:1. Develop LBS data mining algorithms. 2. Mining user's trajectory patterns from smartphone data.3. Develop user context recognition algorithms using smartphone data.4. Mining user's buying behavior and preferences for O2O business.

I worked on following topics, with focuses both on mathematical methods and engineering implementations:1. Proposed and implemented a probabilistic method that infers the travelled path (map-matching) and the transport mode from smartphone data, including GPS, Accelerometer and Bluetooth data. (Probabilistic Model, C++, PostGIS)2. Travel behavior-learning models for smartphone data. (Data mining, Discrete choice model)3. Conversion of OpenStreetMap to routable data structure. (Network analysis, C++, PostGIS)4. A consumer behavior-learning model for shopping on taobao.com. (Web data mining, Discrete choice model)5. A GoogleMap based online travel survey tool, with the visualization of real-time smartphone data and data mining techniques. (Javascript, PostGresql, PHP)6. A visualization and analysis tool for large smartphone data stored in remote servers. (Python, QT, R)I benefited project management experiences and communication skills from following collaborations:1. Collaborated with Nokia Research Center Lausanne. Involved in the development and test stage of the Lausanne Data Collection Campaign in which about 20 kinds of smartphone data are recorded from 200 users in 2 years.2. Supervise 6 semester and master projects: e.g. mobility identification from smartphone GPS data; visualization of smartphone data on Google Earth; energy consumption optimization for smartphone data collection software.I have been a teaching assistant for several courses: Mathematical Modeling of Behavior, Operation Research, Decision-aid methodologies in transportation.smaroute is my opensource project implementing map matching and route choice modelling using smartphone data.https://github.com/godosou/smaroute

Worked on Transportation Planning, specifically on Traffic Impact Analysis and Traffic Modeling, Infrastructure Design.