Asked about Where embedding search fails
Why does embedding search sometimes return irrelevant results?
An answer that works
It measures topical similarity, not whether a passage answers the question. Text about the right subject scores highly even when it contains nothing useful. It also loses exact terms like product codes, which is why hybrid search exists.
Reading an answer is not being able to give one. The section that teaches this is Where embedding search fails, 3 hours of Embeddings.
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