Fig. 4.

Normalized local entropy as a function of the distance from a reference solution, on a tree-like committee machine with $K=9$ and $N\hspace{0.17em}=\hspace{0.17em}999$, trained on 1,000 random patterns. The results were obtained with the BP algorithm, by averaging over 10 samples. Numerical issues (mainly due to the approximations used) prevented BP from converging at small distances for the LAL algorithm, and additionally they slightly affect the results at very small distances. Qualitatively, though, higher curves correspond to larger local entropies and thus wider minima.