Launch HN: Tinfoil (YC X25): Verifiable Privacy for Cloud AI

I think what's changed since this was posted in 2011 is the emergence of embeddings and the need to take advantage of its higher dimensional space. While embeddings expose more underlying structure that can be used for tensor math, ranking systems often are still good ol' trees. This project to me points at a new major "hinge" of information architecture.

bawolff · 1h ago

What does this have to do with wavelet trees?

(Sorry for being a dick if im wrong) - was this an AI generated comment that got confused by the domain specific meaning of the word "rank" in this context?

quantadev · 2m ago

You weren't wrong. Wavelet Trees have no relationship whatsoever to vector embeddings.

jdonaldson · 1h ago

That is a pretty badly overloaded word for it, and I didn't even pay much attention to the notion of "rank" anyways. I'm mainly interested in how the text is represented with bit vectors. It's very reminiscent of how vector math plays out in other ML domains, but I would bet that many people working with text have never heard of it.

bawolff · 1m ago

> It's very reminiscent of how vector math plays out in other ML domains

How so?

29ebJCyy · 24m ago

Can you explain how this is useful for those problems though? I'm struggling to come up with a way to use rank queries on embeddings in order to get back useful information.

JohnKemeny · 3h ago

Discussed here 12 years ago. https://news.ycombinator.com/item?id=5526991 (7 comments)

Launch HN: Tinfoil (YC X25): Verifiable Privacy for Cloud AI

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