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. 2006 Jun 29;7:326. doi: 10.1186/1471-2105-7-326

Figure 1.

Figure 1

Convergence of the optimization procedure. Traceplots illustrating the convergence of the differential EM method in the optimization of contact potentials, on data set DS1. Are shown, as a function of the number of iterations (a) the score ω(θ) = In p(S | C, θ), (b) and (c) examples of pairwise contact energies obtained for some amino acid pairs.