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Definition: neural network

An artificial intelligence (AI) modeling technique loosely based on the behavior of neurons in the human brain. Neural networks are used in image processing, robotics, diagnosing, forecasting and many other disciplines. Unlike regular applications that are programmed to deliver precise results ("if this, do that"), neural networks use a much more complicated architecture that analyzes data. Neural networks are trained to recognize images, speech and other patterns and are the primary foundation of "machine learning" and "deep learning." See neuron, deep learning, GAN, neuroinformatics, machine learning, TensorFlow and AI.

To learn how a neural network actually performs recognition, see convolutional neural network. The following neural network diagrams from the Azimov Institute in the Netherlands reveal the huge variety of architectures that have been conceived.

Neural Network Architectures
AI networks are one of the most researched areas of computing in the 21st century. (Images courtesy of Fjodor van Veen and Stefan Leijnen (2019). The Neural Network Zoo, www.asimovinstitute.org/neural-network-zoo)