Don‘t look back. Don‘t hesitate, just do it.
Supplementary knowledge:
1. what is manifold learning流形学习?
2. what does tsne do? only dimension reduction or help identify clusters.
3. the output of sklearn.manifold.TSNE is 2 dimensional dataframe. how to deal with the output matrix?
原文：https://www.cnblogs.com/dulun/p/12219660.html