# Zi-Onn (hzionn)

> A tech nerd pretending not to be. This is my digital garden. Here I spread my ignorance. Currently finishing my thesis on GNNs.

Personal website (you are at here): https://hzionn.com
GitHub: https://github.com/hzionn
LinkedIn: https://linkedin.com/in/hzionn
Threads: https://threads.com/@cs.murmur
Medium: https://medium.com/@hzionn
Substack: https://zionn.substack.com
Log: https://consumed.hzionn.com

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## Pages

- /writing — Blogs, notes, and thoughts
- /tags — Browse all posts by topic
- /about — Story, context, and where to explore more
- /building — Projects and competition highlights
- /background — Experience, education, certifications, and talks
- /more — Recommendations, lately updates, and books

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## Skills

Programming: Python, Go, JavaScript/TypeScript, C, Lua, SQL
Cloud: Google Cloud (GCP), AWS
AI: Machine Learning, Deep Learning, Graph Neural Networks, NLP, PyTorch (Geometric), Tensorflow (Keras)
Data: data build tool, Postgres, BigQuery, Pandas, GA4, Mixpanel
Tools: Docker, Django, GitLab CI/CD, Selenium, LangChain, Node, React, Express
Other: Git, Linux, ROS2, Bash, Zsh

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## Background


### Experience

- Data Intern @ KDAN (Jan 2025 - Sep 2025)
- Teaching Assistant @ Vibe Coding Workshop, NCCU (Dec 2025)
- Teaching Assistant @ Introduction to Programming, NCCU (2023 - 2024)
- Workshop Instructor @ Cupoy & Shane English (2024)
- Project Member @ Data Analysis Club, NCKU (2021)

### Education

- Master of Science in Computer Science — National Cheng Chi University (NCCU), Taipei, TW (2022 - Present)
- Bachelor of Social Science in Psychology — National Cheng Kung University (NCKU), Tainan, TW (2017 - 2022)

### Talks

- Summer Workshop Speaker @ National Chengchi University - Computer Science Department

### Certifications

- AWS Certified AI Practitioner (Oct 2025)
- Google Gemini Certified Educator (Sep 2025)

### Tutoring

APCS, APCS Principles, Python, Robotics & AI, Math Algebra, Python, Scratch, Minecraft, Ad-hoc Consultation

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## Projects

- Consumed | demo: https://consumed.hzionn.com
- Badge Checker | demo: https://gai-studyjam-badge-checker.vercel.app/
- Information Retrieval System | repo: https://github.com/hzionn/Information-Retrieval
- Prompt Manager CLI | repo: https://github.com/hzionn/prompt-manager-cli
- LINE Bot with Gemini | repo: https://github.com/hzionn/linebot-gemini-python
- Make Sense of MapReduce | repo: https://github.com/hzionn/make-sense-of-MapReduce
- Campus Group Platform 

## Competitions

- Voice-driven AI Chatbot for Humanoid Robots @ AWS x DIGITIMES Hackathon 2025 [won]
- Taipei & New Taipei City Dashboard @ Taipei & New Taipei City Hackathon 2025 [finalist]
- 真相只有一個: 事實文字檢索與查核競賽 @ AI Cup 2023
- Open Problems - Single-Cell Perturbations @ Kaggle - Open Problems in Single-Cell Analysis 2023
- OTTO - Multi-Objective Recommender System @ Kaggle - Otto (GmbH & Co KG) 2023
- Store Sales - Time Series Forecasting @ Kaggle 2022

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## Latest Writing

- "Diffusion LLMs Are Fast and Interesting!" (/writing/diffusion-llms) [blog] [dllms, diffusion, llms, generative-ai]
- "My wrapped and reflections on 2025" (/writing/wrapped-reflection-2025) [note] [reflection, experience]