fig7

Figure 7. Evolution of predictive uncertainty and final sampling distributions for SVC under different acquisition strategies. (A) Uncertainty distributions at iterations 0, 25, and 50 for MS, LC, and EA; (B) Sampling distributions after 50 iterations. Triangles denote the uniformly distributed initial labeled samples, whereas circles denote samples subsequently selected through active-learning queries. SVC: Support vector classifier; MS: margin sampling; LC: least confidence; EA: entropy-based acquisition.