I don't think you understand what dimensionality reduction means. SSN is a looku...

		alexcnwy on April 1, 2018 \| parent \| context \| favorite \| on: How Cambridge Analytica’s Facebook targeting model... I don't think you understand what dimensionality reduction means. SSN is a lookup key into the raw data. Dimensionality reduction is by definition lossy since it's used in scenarios where: rows of data = n <<< m = number of features