By analyzing the rule of life prediction, the improved PERM tend to decrease the thresholds in the prophase of polymer growth, and to increase the thresholds in the anaphase.

• 通过对人生预测准确性的分析得到启发,在链生长的前期降低复制的门槛,在链生长的后期提高复制的门槛。综合这些策略,制定了更有效的评判准则,对PERM算法进行改进。