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R: Mining Spatial, Text, Web, and Social Media Data
book

R: Mining Spatial, Text, Web, and Social Media Data

by Bater Makhabel, Pradeepta Mishra, Nathan Danneman, Richard Heimann
June 2017
Beginner to intermediate
651 pages
14h 24m
English
Packt Publishing
Content preview from R: Mining Spatial, Text, Web, and Social Media Data

Classification using the backpropagation algorithm

The backpropagation (BP) algorithm learns the classification model by training a multilayer feed-forward neural network. The generic architecture of the neural network for BP is shown in the following diagrams, with one input layer, some hidden layers, and one output layer. Each layer contains some units or perceptron. Each unit might be linked to others by weighted connections. The values of the weights are initialized before the training. The number of units in each layer, number of hidden layers, and the connections will be empirically defined at the very start.

Classification using the backpropagation algorithm

The training tuples are assigned ...

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Publisher Resources

ISBN: 9781788293747