BP network model and BP algorithm are also researched and BP algorithm is improved by adding the momentum item and self-adapting the length of trainstep.
研究了BP网络模型和BP算法，并对BP算法进行了加入动量项和自适应调节步长的改进。
2
One helpful step is to train lunchtime supervisors to distinguish bullying from playful fighting, and help them break up conflicts.
其中一个有用的步骤是培训午餐时间的监督人，让他们区分欺凌与嬉戏打闹，并帮助他们化解冲突。
3
Toad got down on the step, and as the train slowed down to almost a walking pace, he heard the driver call out, "Now, jump!"