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    Embedding

    An embedding is a list of numbers that represents the meaning of text (or other data) in a form machines can compare and search.

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    In Simple Terms

    Think of it as a barcode for meaning: different phrases with the same idea get similar codes.

    Detailed Explanation

    Embeddings turn words, sentences, or documents into fixed-length vectors. Similar meaning produces similar vectors, so you can search by meaning (semantic search) instead of exact keywords. When to use embeddings: for search, recommendations, clustering, and as input to RAG. Common mistakes: mixing embedding models between indexing and querying, or assuming all models use the same scale for similarity.

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