James Sethna > Sloppy models > Sloppy Spectra

Sloppy Spectra

Here we provide eigenvalues for the cost Hessian (in statistics, the eigenvalues of $\chi^2$) at the best fit, for a series of models. (For probabilistic models like the Ising model and the &Lambda CDM model for the cosmic microwave background radiation, these are eigenvalues of the Fisher Information matrix, a generalization of the cost Hessian to probabilistic models.)

More on sloppiness:

Last Modified: Sept 16, 2020

James P. Sethna, sethna@lassp.cornell.edu; This work supported by the Division of Materials Research of the U.S. National Science Foundation, through grant DMR-070167.

Statistical Mechanics: Entropy, Order Parameters, and Complexity, now available at Oxford University Press (USA, Europe).