Thursday, January 10, 2013

1301.1923 (Johannes Neidhart et al.)

Exact Results for Amplitude Spectra of Fitness Landscapes    [PDF]

Johannes Neidhart, Ivan G. Szendro, Joachim Krug
Starting from fitness correlation functions, we calculate exact expressions for the amplitude spectra of fitness landscapes as defined by P.F. Stadler [J. Math. Chem. 20, 1 (1996)] for common landscape models, including Kauffman's $LK$-model, rough Mt. Fuji landscapes and general linear superpositions of such landscapes. We further show that correlations decaying exponentially with Hamming distance yield exponentially decaying spectra similar to those reported recently for a model of molecular signal transduction. Finally, we compare our results for the model systems to the spectra of various experimentally measured fitness landscapes. We claim that our analytical results should be helpful when trying to interpret empirical data and guide the search for improved fitness landscape models.
View original:

No comments:

Post a Comment