K-最邻近分类器的一个实例，实现了对数据的分类，内含测试数据-an example of K-nearest algorithm,containing a set of test data

k-means算法的一个小实例，很好的展示了，算法的过程，测试聚类文件在txt中-A small example k-means algorithm, a good showing, the algorithm process, the test cluster file txt

基于R语言的建模，结合例子的代码实现，包括假设检验与各种统计量的计算(Based on the R language modeling, combined with the code implementation of the example, including the hypothesis test and the calculation of various statistics)