Josh Ludan — best-of

In-browser ML demos, small JS vibelets, and a Claude-curated corner.

Real models running in your browser, or research you can actually read and run.

Small, playful JS experiments — less "demo of a system," more "vibe you can scroll through." Live and playable.

Claude Code Corner

Josh’s bio and papers are on Home and Research.

Projects worth knowing about

  • Reddit social contagion (with Prof. Damon Centola) — scraped hundreds of gigabytes of Reddit to model how contagions move through communities under different graph-centrality measures.
  • Street View → US-state EfficientNet — raised SOTA on predicting the US state of a Street View image from 25.9% to 54.2%.
  • Financial-sentiment LLM for online communities — beat every publicly available baseline during evaluation; 2023 Best Practicum at Penn.
  • YouTube consumption patterns — topic modeling of American YouTube data with Homa Hosseinmardi & Duncan Watts at the CSS Lab.
  • Daily Pennsylvanian topic modeling — surfacing discussion-trend shifts in the campus paper over time.
  • PDSG consulting — NLP for physician procedure-eligibility decisions (Flagler Health); sales-data customer-acquisition modeling (EmployAI).

Find Josh elsewhere