Hello! My name is Hangzhi Guo (郭杭之 | Birkhoff). I am a first-year Ph.D. student in 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 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 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.


  • Machine Learning
  • Human-Computer Interaction
  • Social Computing
  • Artificial Intelligence


  • Ph.D. in Informatics, 2020 - Present

    Pennsylvania State University

  • BSc in Computer Science, 2016 - 2020

    Wenzhou-Kean University

Recent Posts

More posts from My Blog

Emerging Trends in Applied Deep Learning Research

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


Research & Teaching


Research Intern

Pennsylvania State University

Jul 2019 – Aug 2019 State College, US
We propose a novel deep learning model, PECAD, for helping famers to sell their products in their best interests. This project was featured in News Medical Life Sciences and Penn State News.

Teaching Assistant

Wenzhou-Kean University

Sep 2018 – Dec 2018 Wenzhou, China
I developed tutorials on some confusing issues aimed at teaching Java to students interested in programming. I also helped first- and second-year CS students solving Java-related questions.

Undergraduate Research Assistant

Wenzhou-Kean University

Sep 2017 – Feb 2018 Wenzhou, China
We prototyped and developed a tablet-based mathematics and cognitive game for children with autism. The work was accumulated into a research paper published by HCI International 2018.