Side projects and toys: things I built because I was curious, outside of papers.
A handwriting diary inspired by the enchanted diary in Harry Potter: you write with a stylus or finger, and the page answers in handwriting, slowly, then lets both of you fade. No database, no logs, no history. A small design provocation about AI that does not remember.
2026 · Next.js, perfect-freehand, OpenAI Responses API
An agent skill for Claude Code, Codex, and Antigravity that helps write HCI papers. It picks a paper's structure from the kind of contribution it makes (a system, a study, a design inquiry, a concept), and it leaves facts the notes do not support as TODOs instead of filling them in. The guidance draws on close readings of 128 HCI papers.
2026 · Python, LaTeX · English and Korean
A password-protected chatbot I built so my advisor and collaborators could ask about an ongoing project on their own schedule. It answers from my Obsidian notes, read live from a private vault repository, and calls a tool to summarize recent commits for questions like "what changed in the last two weeks?"
2026 · Streamlit, OpenAI tool calling, GitHub API · private deployment
A discourse analysis of 431 top posts from r/IndustrialDesign (2023–2025): sentence embeddings, UMAP and k-means clustering, and LLM-written cluster summaries that map the community's themes, from CAD and rendering to sketching and careers.
2025 · Python, Qwen3 embeddings, UMAP, scikit-learn