c++实现的KNN库:建立高维度的K-d tree,实现K邻域搜索，最小半径搜索-K-NN algorithm implementation. It supports data structures and algorithms for both exact and approximate nearest neighbor searching in arbitrarily high dimensions.

由国外著名大学编写的非常有效近似最近邻分类算法的源码与库，可直接使用，也可作为学习-Well-known universities from abroad prepared very effective approximate nearest neighbor classification algorithm source code and libraries, can be used directly, can also be used as study

本代码是ANN算法求最近元素的实现代码，使用时只需将ANN/ANNx.h包含进去即可-that is a good library to implement the algothrim of approximate nearest neighbor

This toolbox contains C++ files that implement the Approximate Nearest Neighbor Library (ANN) and and its utility functions in matlab.