Embeddings + Postgres pgvector, explained from zero. Search Wikipedia by meaning, not keywords, with a free local model. Day 45 of TechFromZero.
Type "animals that live in the ocean" into a normal search box and it hunts
for the words animals, live, ocean. An article titled "Blue whale" that
never uses any of those words? Missed.
Today we fix that. We'll build a search engine that matches on meaning, so
"animals that live in the ocean" surfaces Blue whale and Coral reef —
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