• 10/2014, I was honored by National Scholarship Award in Tsinghua Univerisity (Rank 1/309) !
  • 09/2014, ToAuth was awarded as Best Paper in Trustcom 2014!
  • 06/2014, SleepHunter has been accepted by Ubicomp 2014!

Short Bio

I am currently a third-year Master student in the School of Software, Tsinghua University, under supervision of Prof. Yunhao Liu. Meanwhile, I am also a long-term research intern in Wireless and Network Group and Knowledge Mining Group of Microsoft Research Asia. My direct mentiors are Dr. Yunxin Liu and Dr. Zaiqing Nie. I received the B.E. in 2012 in College of Infomation Security, Shanghai Jiao Tong University, Shanghai, China. I am a student member of IEEE and ACM.

Research Interests

  • Mobile computing, in particular mobile sensing .
  • Machine learning, in particular in nature language processing (NLP) problems .
  • Security and authentication .


  • 05/2014: Authentication method and terminal equipment. Publication number: CN103795537 A. [Link]
  • 10/2013: Method and system for recognizing position of mobile equipment. Publication number: CN103369135 A. [Link]


Conference papers:

  1. [Trustcom'14] ToAuth: Towards Automatic Near Field Authentication for Smartphones.( Best Paper : 3 papers out of 73 accepted papers! ) [PDF]
    Weixi Gu, Zheng Yang, Longfei Shangguan, Wei Sun, Kun Jin, and Yunhao Liu
  2. [Ubicomp'14] [PDF ]
    Weixi Gu, Zheng Yang, Longfei Shangguan, Wei Sun, Kun Jin, and Yunhao Liu

Journal papers:

  1. [TMC] Sleep Hunter: Towards Fine Grained Sleep Stage Tracking with Smartphones [PDF]
    Weixi Gu, Zheng Yang, Longfei Shangguan, and Yunhao Liu
  2. [TPDS] Sherlock: Micro-environment Sensing for Smartphones [PDF]
    Zheng Yang, Longfei Shangguan, Weixi Gu, Zimu Zhou, Chenshu Wu, and Yunhao Liu


  • SleepHunter

    SleepHunter is a mobile service on mining sleep stages during sleep. It detects sleep stage by recording the user's physical activities and sleep environment. The aim of this project lays two fold. In the first, SleepHunter provides the sleep quality to users by the distribution of different sleep stages. Secondly, users can be woken up when SleepHunter detects the user falls in light sleep, which is good for their health.

  • Bubbles

    Bubbles is a file management mobile service. Users can leverage it to manage files and share files with other users. Moreover, Bubbles can help users to transfer files by creating local network . Four versions of Bubbles have been developed on OS X, iOS, Windows and Android platforms.

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