>>16840594
I'll take that as a "No." to both then.
Like it or not, singular value decomposition is the only technique that will handle the inherent variability of your eigenspace.
Look, I did this for the government for over 30 years. I can change behavior and drive traffic to your site that will make slashdot or real-4chan DDoSs blush in shame.
But you have got to be willing to learn linear algebra.
Are you ready to begin you're an hero's journey, young padawan?