Artificial neural network: Difference between revisions

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==Adaptation and Learning==
==Adaptation and Learning==
When a neuron receives and processes an input signal, it changes the '''weight''' value assigned to the input received. The weighted signals are summed to form the activation value, which is filtered by a function called '''transfer function'''. Changes in a specific neuron's behavior produces changes in the entire neural network, and this is basically how the neural networks learn.
Learning in neural networks can be supervised or not unsupervised, and it's often produced by a learning algorithm. Learning is subject to different conditions like the way neurons are associated and the properties of every network component, such as neurons and axons, and for this reason, it's not guaranteed.


==See also==
==See also==
* [[Artificial neuron]]
* [[Artificial neuron]]
* [[Connectionism]]
* [[Connectionism]]

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Artificial Neural Networks (ANNs for short) are a connectionist processing model inspired on the biological neural networks. Artificial neural networks are composed by simple nodes called artificial neurons. They can be implemented via hardware (i.e: electronic devices) of software (i.e: computer simulations).

In some models, the network behavior is stored in the connections between processing units in values called weights, which represent the strength of each link, equivalent to many components of its biological counterpart.

Adaptation and Learning

Learning in neural networks can be supervised or not unsupervised, and it's often produced by a learning algorithm. Learning is subject to different conditions like the way neurons are associated and the properties of every network component, such as neurons and axons, and for this reason, it's not guaranteed.

See also