sklearn 下的流行学习（Manifold Learning）—— sklearn.manifold

1. t-SNE

from sklearn.manifold import TSNE
X_proj = TSNE(random_state=123).fit_transform(X)

2. t_sne

• _joint_probabilities

  _joint_probabilities(distances, desired_perplexity, verbose)

  • Compute joint probabilities p_ij from distances.

• _kl_divergence

  _kl_divergence(params, P, alpha, n_samples, n_components)

  • t-SNE objective function: KL divergence of p_ijs and q_ijs.