翻译：对于样本集中任一样本A 其B-邻域包含样本集D中与xj的距离不大于B的子样本集即 C=1+b 这个子样本集的个数记为N。

For any sample A in the sample set, its B-neighborhood contains a subset of samples in set D whose distance to xj is not greater than B, denoted as C=1+b. The number of samples in this subset is denoted as N.