Yes. That makes much more sense now. I did see the X < Y criteria in the OP (which incidentally you've reversed in the above post?), and thought that was what I was missing, but I didn't immmediately see how it was applied.

I don't have any reference to prior art to offer, though I will have a look around to see what I can turn up--but presumably you've already done this. It can be quite hard to know what to search for in the situations.

I like the idea of a graphing module based around this and bitstrings, it sounds like it could be quite efficient in terms of both time and memory, unlike the existing implementations I've tried.

Good luck with it.

Update: Maybe this is related to the problem?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^3: Extendable pairwise indexes - prior work? by BrowserUk
in thread Extendable pairwise indexes - prior work? by pjf

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