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🤖 Data & AI

Embeddings & vector search

What an embedding is, cosine similarity, chunking, HNSW, pgvector and hybrid search.

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Question 1 of 8

What is a text embedding?

Question 2 of 8

Cosine similarity measures:

Question 3 of 8

Approximate nearest-neighbour indexes such as HNSW trade:

Question 4 of 8

Why split documents into chunks before embedding them?

Question 5 of 8

pgvector is:

Question 6 of 8

You switch to a different embedding model. What must happen to the stored vectors?

Question 7 of 8

If all vectors are normalised to unit length, their dot product equals:

Question 8 of 8

Hybrid search combines:

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