How AI Understands Meaning — Embeddings Explained for Backend Engineers
This story is from 2026-10-05. It is preserved in the archive; the latest stories are on the live feed.
The previous article explained that RAG retrieves "semantically similar" chunks before generating an answer. But that phrase hides an entire question: how does a computer measure semantic similarity? A computer doesn't understand meaning. It processes numbers. You can't tell a computer that "return…
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- 2026-10-05 14:30 · DEV Community — AI
How AI Understands Meaning — Embeddings Explained for Backend Engineers