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Does anybody know of, or have, a reasonable implementation of SOMs in Mathematica?
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Kohonen Map or Self-Organizing Map (SOM) is a type of neural network. This was developed by Tuevo Kohonen in 1982. The name Self-organizing because it does not require supervision. This follows an unsupervised learning approach and its network is trained through a competitive learning algorithm.
The concept of a self-organizing map, or SOM, was first put forth by Kohonen. It is a way to reduce data dimensions since it is an unsupervised neural network that is trained using unsupervised learning techniques to build a low-dimensional, discretized representation from the input space of the training samples.
There is a third-party Mathematica package called machine learning framework, which implements self-organizing maps.
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