spootze

Regarding the frequentist vs bayesian debates, my slightly provocative take on these three cultures is

- subjective Bayes is the strawman that frequentist academics like to attack

- objective Bayes is a naive self-image that many Bayesian academics tend to possess

- pragmatic Bayes is the approach taken by practitioners that actually apply statistics to something (or in Gelman’s terms, do science)

pgvector has you covered: https://github.com/pgvector/pgvector

Facebook is actually one of the few platforms (if not the only platform?) that allows running self-serve RCTs (conversion lift tests in their lingo): https://www.facebook.com/business/help/688346554927374

Conditional on them honestly reporting numbers, it's a pretty credible way to measure effectiveness in terms of incremental conversions you get by showing ads on FB/IG