KD_Tree In computer science, a kd-tree (short for k-dimensional tree) is a space-partitioning data structure for organizing points in a k-dimensional space. kd-trees are a useful data structure for several applications, such as searches involving a m

基于K维空间索引的点查询算法KD树，本代码实现一般的查询功能-K-dimensional space-based index point KD tree search algorithm, the code search function in general

kd_tree代码，包括原理，树的构建，搜索。-kd_tree code, including the principle of constructing tree search.

数据挖掘之决策树的简单详细使用！！！！！！！！！！！！！(Simple and detailed use of decision tree for data mining)