[__derek__]

In case anyone else who's played with search engines thinks, "Wait, Okapi sounds familiar," here you go: https://en.wikipedia.org/wiki/Okapi_BM25

The "Get Started" and "View on GitHub" links both have `href="/"`, so they don't work.

[vector_spaces]

Thanks for sharing, although I feel like this is more likely just following the "put a bird on it" trend of naming software frameworks after animals