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RAG From Scratch: Part 14 (ColBERT)

LangChain · 25.2K views · 2024-03-30 · 7:13

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Our RAG From Scratch video series walks through impt RAG concepts in short / focused videos w/ code. This is the 14th video in our series and focuses on indexing with ColBERT for fine-grained similarity search. Problem: Embedding models compress text into fixed-length (vector) representations that capture the semantic content of the document. This compression is very useful for efficient search / retrieval, but puts a heavy burden on that single vector representation to capture all the semantic nuance / detail of the doc. In some cases, irrelevant / redundant content can dilute the semantic usefulness of the embedding.

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Video by LangChain, played through YouTube.

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