Backpropagation model 

The backpropagation model can be conceptually represented as follows:

Figure 4.16: Backpropagation model

The backpropagation algorithm can easily be implemented in a staged manner. This is computationally less demanding compared to the gradient descent:

  • Initialize the model: In this step, the model is randomly initialized to a point where the weights are selected with mathematical approximation and randomness. This is the first step in the feed-forward network. 
  • Propagate forward: In this step, all the input units, hidden units, and the output units are activated after adding the sum of the products of the neuron units ...

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