My Erdos number is 4.
I am a Senior Member of ACM, IEEE and CCF, and a Fellow of the Royal Geographical Society.
I am a super soccer fan. Bundesliga is my favourite league. I support the following great teams: Bayern Munich, Hannover 96, Beijing Guoan, and Tsinghua-EE.
When I was in North Carolina, I enjoyed hiking and kayaking a lot.
I like playing both Chess and Chinese Chess. I won the 2nd/3rd place of the Chess team tournament at Tsinghua university in 2005/2008. Also, I won the 3rd place of the Chinese Chess team tournament at Tsinghua university in 2003.
The countries I have visited:

Tutorials:
- Git
- SSH Tunnel
- LaTeX
- How to: review a paper, write a paper, write an abstract, give a presentation, chair a session, deal with rejection
- Mailinglists: SOCNET
Tools:
- Homebrew
- Python: matplotlib
- Social Graph Analysis: NetworkX, SNAP
- English: Pronunciation of Mathematical and scientific symbols, English grammar
- Machine Learning: catboost, xgboost [Guide], scikit-learn, Weka (RandomForest, J48, NaiveBayes, LibSVM), Keras, TensorFlow PlayGround
- Open source: Licensing
- Crawling: webdriver, BeautifulSoup
- Sentiment analysis: NLTK, StanfordNLP
- Datasets: SNAP, Cool, KONECT
Books:
Technical news: