Doug Turnbull's personal blog and essays http://softwaredoug.com/ My biased search expert perspective on where new AI teams run into expensive and unfortunate mistakes Sat, 29 Aug 2026 00:00:00 +0000 http://softwaredoug.com/blog/2026/08/29/ai-team-mistakes.html http://softwaredoug.com/blog/2026/08/29/ai-team-mistakes.html For vector search buyers, pay attention to how graphs get updated. Tue, 18 Aug 2026 00:00:00 +0000 http://softwaredoug.com/blog/2026/08/18/update-graph-vector-db.html http://softwaredoug.com/blog/2026/08/18/update-graph-vector-db.html A useful pattern for LLM classification at scale is to let it hallucinate plausible, fake entities. Then resolve to real ones. Mon, 10 Aug 2026 00:00:00 +0000 http://softwaredoug.com/blog/2026/08/10/hypothetical-classifications.html http://softwaredoug.com/blog/2026/08/10/hypothetical-classifications.html A week of wector wevents - vector retrieval, hybrid search, combining the dense and lexical. Wed, 29 Jul 2026 00:00:00 +0000 http://softwaredoug.com/blog/2026/07/29/vectors-week.html http://softwaredoug.com/blog/2026/07/29/vectors-week.html Sure its not fancy, but you might save operational headaches by just brute-forcing vector search for a small enough corpus Wed, 29 Jul 2026 00:00:00 +0000 http://softwaredoug.com/blog/2026/07/29/just-brute-force-embeddings.html http://softwaredoug.com/blog/2026/07/29/just-brute-force-embeddings.html Let's walk through basics of using PCA to reduce dimensionality of embeddings Fri, 24 Jul 2026 00:00:00 +0000 http://softwaredoug.com/blog/2026/07/24/pca-shrink-ray.html http://softwaredoug.com/blog/2026/07/24/pca-shrink-ray.html