- Hopfield net. Recurrent artificial neural network that serve as content-addressable memory systems with binary threshold units. They converge to a stable state.
- Backpropagation. Supervised learning technique used for training artificial neural networks.
- Self-organizing map (Kohonen map). Neural networks trained using unsupervised learning to produce low dimensional (2D, 3D) representation of the training samples. Good for visualizing high-dimensional data.