Fig. 4
From: Substitution matrix based color schemes for sequence alignment visualization
Z-scores Z for different substitution matrices and rising iterations. To analyze the quality of the implemented SA algorithm, the optimization has been applied to a selection of substitution matrices. A Z-score like metric is used here to visualize the reached score relative to randomized sampling of the search space. The iterations are specified on the x-axis on a logarithmic scale, whereas the matrices are given on the y-axis