About Me

I'm a first-year Computer Science Ph.D. student at Rice University working with Prof. Moshe Vardi. My current research interests are in model counting and sampling. Previously, I received my B.S. from Computer Science Dept. in Nanjing University, advised by Prof. Gong Cheng and did some work of Question Answering.


Rice University Sep 2018 -

Ph.D. in Computer Science

Nanjing University, National Elite Program Sep 2014 - Jun 2018

B.S. in Computer Science


Zhiwei Zhang, Lingling Zhang, Hao Zhang, Weizhuo He, Zequn Sun, Gong Cheng, Qizhi Liu, Xinyu Da, Yuzhong Qu. Towards Answering Geography Questions in Gaokao: A Hybrid Approach. [pdf] [slides]

In Proceedings of the 2018 China Conference on Knowledge Graph and Semantic Computing (CCKS'18), to appear.
  • Answering Geography Questions requires lots of reasonings so that traditional QA cannot work
  • Proposed an auto-constructed and auto-extended knowledge graph in a knowledge-driven system to solve geography questions
  • Used POS tag, sematic mapping, keywords extraction and random walk on knowledge graph
  • Achieved encouraging F-1 Score of 0.3 considering the baseline was below 0.1 in experiment and improved the score by 22% in a real test


"Fourier Analysis on Boolean Functions and its Applications", LAPIS meeting, Rice University Oct 18, 2018


Teaching Assistant for Problem Solving(III), Nanjing University Sep 2017 - Jan 2018


  • First Prize, National Elite Program Scholarship (top 10% in Elite Program) CS Dept., Nanjing University, 2017
  • Elite student (top 5% in university) Nanjing University, 2016
  • First Prize in Province (top 3% of all competitors), the Mathematical Competition of Senior High School of China 2013


  • Music: singing, playing piano
  • (e)Sports: table tennis, badminton, Dota, FIFA

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