中文说明：经典流形学习代码：ISOMAP，用于数据的前期预处理，通过该函数寻找数据的内在结构，然后再在该映射后的上咀上做进一步操作，如分类，回归等。通过在软件工程数据上进行实验，结果显示ISOMAP比PCA效果要好。大家可以放到自己的数据集上测试下
English Description：
Classical manifold learning code: ISOMAP, for the data preprocessing, through the function to find the internal structure of the data, and then in the map on the nozzle to do further operations, such as classification, regression and so on. Through experiments on software engineering data, the results show that ISOMAP is better than PCA. You can put their own data set on the test