the sample space

Since we know one of the children is a girl, we will drop the Boy-Boy possibility from the sample space.

因为我们已经知道其中有一个女孩，我们就可以去掉男孩-男孩的可能性。

Basic idea is to adoption of non-linear transform, so that after changing the characteristics of the sample space become linearly separable.

基本思想是通过非线性变换，使样本变换之后的特征空间中变得线性可分。

Both algorithms take advantage of the communication relationship with the neighbor node, build the sample space, to improve the positioning accuracy.

这两种算法均利用邻居节点间的通讯约束关系构建样本空间，从而提高算法的定位精度。