Figure1

Figure 1. The curves of probability density function $$ {{p}_{u}}(x) $$ and $$ {{p}_{v}}(x) $$. (A) The distribution of fault $$ f_u $$ and fault $$ f_v $$ corresponds to no overlap, and fault $$ f_u $$ and fault $$ f_v $$ can be completely separated; (B) The distributions corresponding to fault $$ f_u $$ and fault $$ f_v $$ overlap completely, and fault $$ f_u $$ and fault $$ f_v $$ cannot be separated; (C) The distributions corresponding to fault $$ f_u $$ and fault $$ f_v $$ overlap partially, and fault $$ f_u $$ and fault $$ f_v $$ can be partially separated.