SOM neural networks
The SOM (self organizing maps) are some very intuitive neural networks. There are a lot of more detailed description of these networks but here is a more intuitive description. You have a number of neurons usually arranged in a 2D or 3D grid, each neuron has an associated weight vector. The input, which is a vector of the same size as the weight vector is connected to each neuron. The natural association is that each vector is a point in an n-dimensional space....