Zhuyun Dai

Language Technologies Institute, Carnegie Mellon University



I am now a Software Engineer at Google. I obtained my Ph.D. in August 2020 from Language Technologies Institute (LTI), Carnegie Mellon University. During my Ph.D., I worked with Professor Jamie Callan.

My research aims to improve language understanding in tody's information retrieval systems, towards building the next-generation information assistant systems that can help people access the world's knowledge in seamless ways. To achieve my goals, I combine advances in deep learning and NLP with insights from information retrieval and large-scale distributed systems. The methods I developed enable information retrieval systems to understand people better, retrieve more accurate documents, and present results in more natural ways.

I came to LTI in 2014 fall as a master student in the MLT program, and started the Ph.D. study in 2016 fall. Prior to CMU, I completed my undergraduate study in Peking University, majoring in Computer Science.

For more information, please visit my Curriculum Vitae, and find my pulications on the publications page or Google Scholar.

Last updated: August 18, 2020.




I defended my PhD thesis: "Neural Matching and Importance Learning in Information Retrieval" [slides][Dissertation]


Our short paper "Understanding BERT Rankers Under Distillation" was accepted at ICTIR 2020 [paper]


Three papers in deep retrieval and conversational search got accepted into SIGIR 2020!


Check out my talk (slides) in the Web Conference 2020


Our submission "DeepCT Retrieval + TF-Ranking BERT Ensemble" got to the 2nd place on the MS MARCO Passage Ranking Leaderboard!


One full paper accepted by the Web Conference 2020 (Oral Presentation).

Email: zhuyund [at] cs [dot] cmu [dot] edu

Address: 5000 Forbes Avenue

Office: 5513 Gates Hillman Complex

Google Scholar




Honors & Awards

MS in Language Technologies

Language Technologies Institute, School of Computer Science

Carnegie Mellon University, Pittsburgh, United States

2014.08 - 2016.06

B.S. in Computer Science

Computer Science Department, School of Electronic Engineering and Computer Science

Peking University, Beijing, China

2010.09 - 2014.07

GPA: 3.77/4.0 (Top 3)

  • 2019.06  1st Place in the Forte Woman's Leadership Power Pitch Competition

  • 2019.03  2nd Place in the 2019 CMU McGinnis Venture Competition

  • 2014.07  2014 Outstanding Graduating Student of Beijing

  • 2014.06  2014 Excellent Graduation Thesis, Peking University

  • 2013.07  The Google Anita Borg Memorial Scholarship