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Neural Networks - Interview Questions
What is the architecture of an artificial neural network?
To understand the concept of the architecture of an artificial neural network, we have to understand what a neural network consists of. In order to define a neural network that consists of a large number of artificial neurons, which are termed units arranged in a sequence of layers. Lets us look at various types of layers available in an artificial neural network.
Artificial Neural Network primarily consists of three layers:

Input Layer : As the name suggests, it accepts inputs in several different formats provided by the programmer.
Hidden Layer : The hidden layer presents in-between input and output layers. It performs all the calculations to find hidden features and patterns.
Output Layer : The input goes through a series of transformations using the hidden layer, which finally results in output that is conveyed using this layer.
The artificial neural network takes input and computes the weighted sum of the inputs and includes a bias. This computation is represented in the form of a transfer function.
It determines weighted total is passed as an input to an activation function to produce the output. Activation functions choose whether a node should fire or not. Only those who are fired make it to the output layer. There are distinctive activation functions available that can be applied upon the sort of task we are performing.