sub-spacesBNC¹⁰⁴⁵⁸⁴⁺⁶ 基本例句 子空间原型sub-space的复数 At last, the restricted space is divided into some sub- spaces, and random selection is applied to these sub-spaces to enlarge the training sets and resolve the small sample problem preferably. 最后在该范围内进行划分，在子范围内通过随机选择来扩大训练样本，较好地解决了小样本问题。 cnki