Lewis Campbell — Blog https://lewiswcampbell.com/blog/index.html Writing about data, code, design, and everything in between. en-us Thu, 16 Apr 2026 00:00:00 +0000 Movie Rails: Building a Streaming Recommendation Engine from Scratch https://lewiswcampbell.com/blog/movie-rails-capstone.html https://lewiswcampbell.com/blog/movie-rails-capstone.html Thu, 27 Mar 2026 00:00:00 +0000 Data Science How my team clustered 8,000 films into streaming-ready categories using UMAP, HDBSCAN, and a whole lot of hyperparameter sweeps. Moneyball Creator Marketing Part 2: Infrastructure instead of Research https://lewiswcampbell.com/blog/moneyball-creator-marketing-pt2.html https://lewiswcampbell.com/blog/moneyball-creator-marketing-pt2.html Thu, 27 Mar 2026 00:00:00 +0000 Data Engineering Why I stopped trying to 'just finish' scraping 434 YouTube channels and started building scalable infrastructure on AWS instead. Moneyball Creator Marketing Part 1 https://lewiswcampbell.com/blog/moneyball-creator-marketing-pt1.html https://lewiswcampbell.com/blog/moneyball-creator-marketing-pt1.html Thu, 20 Mar 2026 00:00:00 +0000 Data Science I got paid to watch YouTube and Twitch. So naturally, I'm automating myself out of the job. Here's how I scraped nearly a million videos to build a data-driven creator marketing system.