Re:Decomposing the Human Palate with Matrix Factorization
by gwern on Friday February 06, 2015 @02:00PM
(#9010837)
Where did 40 factors come from? That seems to be entirely arbitrary - I'm not seeing any of the usual factorization diagnostics like scree plots or fits.
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Re:Decomposing the Human Palate with Matrix Factorization
by jmcohen on Friday February 06, 2015 @02:15PM
(#9010941)
Right, the choice of 40 as the number of factors was totally arbitrary and unscientific. We tried factorizations with 30, 40, and 50 factors, and chose the one that produced the most interpretable latent factors.