Comment Re:BS (Score 1) 427
Exactly -- what is the false-positive rate of this approach?
If you throw trillions of data sets compacted into a 50-d cube, sure you will find some in the neighbourhood of your target. Probably it is not just one person, but many thousands.
Both machine learning and mass surveillance have to be gauged by the false positive rates, the false negative rates and cost (monetary and otherwise).