This repo builds wraps simple nearest-neighbor searching within a SQLite DB and exposes it via datasette.
Download glove-25: http://ann-benchmarks.com/glove-25.hdf5
Follow directions to build JSON extension: https://stackoverflow.com/questions/39319280/python-sqlite-json1-load-extension
virtual table method:
select * from embed where k=20, metric='dot',pc1=-1.2,...pc32=3.2