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Stochastic Neighbor Embedding with Gaussian and Student-t Distributions: Tutorial and Survey

2020-09-22 03:32:05
Benyamin Ghojogh, Ali Ghodsi, Fakhri Karray, Mark Crowley
arXiv_CV
     
Abstract

Stochastic Neighbor Embedding (SNE) is a manifold learning and dimensionality reduction method with a probabilistic approach. In SNE, every point is consider to be the neighbor of all other points with some probability and this probability is tried to be preserved in the embedding space. SNE considers Gaussian distribution for the probability in both the input and embedding spaces. However, t-SNE uses the Student-t and Gaussian distributions in these spaces, respectively. In this tutorial and survey paper, we explain SNE, symmetric SNE, t-SNE (or Cauchy-SNE), and t-SNE with general degrees of freedom. We also cover the out-of-sample extension and acceleration for these methods. Some simulations to visualize the embeddings are also provided.

Abstract (translated)

URL

https://arxiv.org/abs/2009.10301

PDF

https://arxiv.org/pdf/2009.10301.pdf

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