I'd be interested to know how the singular values are distributed and how many you need before you can cut off the rest. The reconstruction example she shows lo

I'd be interested to know how the singular values are distributed and how many you need before you can cut off the rest. The reconstruction example she shows looks pretty ok after only 70 components (out of presumably a lot lot more). Actually, I'd be even more interested in an NMF decomposition of the data, the weights for the 10-component approximation are [-17541.81, -12749.33, -3766.29, 2005.28, 4193.08, 6832.55, -6704.90, -2135.51, 1112.27, 7627.80]. and I wonder if a purely-additive approach will work better.