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I. Introduction to Neural Networks I. Supervised LearningA. Introduction to PerceptronPerceptron refers to a class of neural networks developed more than forty years ago. Thelearning rule associated with it is a modification of an earlier algorithm called the Hebbrule. A learning rule is a means of finding a suitable set of weights to match the inputpatterns to their target outputs. The process is an iterative one in which the sequence ofpatterns are presented to the network and the weights, initially set to zero or to randomvalues, are updated according to the particular rule used. The patterns are repeated untilthe outputs match or are arbitrarily close to the target vales. The number of iterations isreferred to as training epochs.The Perceptron algorithm is shown below. It assumes bipolar outputs and is based on therationale that by adding to or subtracting from each weight the product of the input andtarget output values on the associated line, the outputs move in a direction toward theirtarget values.
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