"It's worth noting that there are more sophisticated tools that could be applied: machine learning or stats methods - but I've not seen them yet. Possibly becau

"It's worth noting that there are more sophisticated tools that could be applied: machine learning or stats methods - but I've not seen them yet. Possibly because its hard to come up with good training datasets" I think it has more to do with those methods not being 'deterministic' for a broad interpretation of that word. By that I mean, if you're doing de-anonymizing for regulatory purposes, it's a hard sell to convince people 'these transactions are correlated because my neural net, which is a complete black box, says so'.