What is a Vector Database? (2021)
Unfortunately this piece is nebulous on what an embedding is. Apparently it is saved as an array of floats, and it has some string of text it is associated with, and the float arrays are compared by "similarity".None of these explains what an embedding really is. My best guess is that the embedding represents the meaning of the natural language string it was generated from, such that strings with "similar" embeddings have similar meaning. But that's just speculation.