[edit] Kohonen Maps
Kohonen maps (also called self-organizing maps or SOM) and its probabilistic variant generative topographic mapping (GTM) use a point representation in the embedded space to form a latent variable model based on a non-linear ...
Kohonen maps are virtually the only unsupervised Neural networks available in commercial software.
Kohonen maps do 2 things simultaneously : dimensionality reduction and clustering.
 See also: Neural network, Clustering, Dimensionality reduction, Dimensionality, Classification
  
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