Hello! My name is Hangzhi Guo (郭杭之 | Birkhoff). I am a first-year Ph.D. student in the College of Information Sciences and Technology (IST) at Penn State Uniersity advised by Dr. Amulya Yadav. Previously, I studied at a Wenzhou-Kean University majoring in Computer Science.

I am dedicated to leveraging advanced technologies to solve problems for the under-served groups. In particular, I am facinated with combining Machine Learning and Human-Computer Interaction to assist vulnerable groups. In the summer of 2019, I was working on predicting agricultural production prices to improve the lives of farmers at Penn State University. This project was featured in multiple media, including, News Medical Life Sciences and Penn State News. At Wenzhou-Kean University, I developed applications for children with autism to learn elementary mathematical skills.

Feel free to drop me an email if you are interested in my work.


I maintain two websites for blogging. This site contains several posts that I am obsessed with sharing my own thoughts and information among the topics. I also write blogs for recording my notes on classical textbooks, research papers and interesting topics on the Birkhoff Tech Blog. I write blogs to imitate the “teachers teaching information to students” cycle because I strongly believe that teaching and communicating is the most successful approach to learning. I also hope you can be helped by some of my shared posts.


  • Explainable AI
  • Human-in-the-Loop Machine Learning
  • AI for Social Good
  • Deep Learning
  • Human-Computer Interaction


  • Ph.D. in Informatics, 2020 - Present

    Pennsylvania State University

  • BSc in Computer Science, 2016 - 2020

    Wenzhou-Kean University

Recent Posts

Emerging Trends in Applied Deep Learning Research

A state-of-the-art report for non-tech readers.
Emerging Trends in Applied Deep Learning Research