本程序是基于流型标签的标签学习，很有机器学习参考价值，各位可以参考一下。代码中分享了论文来源。-The algorithm ML^2 includes three main steps. First, it estimates the topological structure　the feature space. Then it transfers the

　　topological structure to the label space and constructs the label manifold.

　　Finally, it adapts MSVR to learn the mapping　the feature manifold to

the label manifold. Here is an example of ML^2 algorithm.