Contents

- 1 What is the output of activation function?
- 2 What type of activation function is used to get the output 0 or 1?
- 3 Which activation function Cannot be used in output layer?
- 4 What is the output of an activation function?
- 5 Which is combination of loss and activation functions should be used?
- 6 How are activation functions different from linear functions?
- 7 Why are there different activations for different problems?

## What is the output of activation function?

In artificial neural networks, the activation function of a node defines the output of that node given an input or set of inputs. A standard integrated circuit can be seen as a digital network of activation functions that can be “ON” (1) or “OFF” (0), depending on input.

## What type of activation function is used to get the output 0 or 1?

sigmoid activation function

The sigmoid activation function is also called the logistic function. It is the same function used in the logistic regression classification algorithm. The function takes any real value as input and outputs values in the range 0 to 1.

## Which activation function Cannot be used in output layer?

Sigmoid and tanh should not be used as activation function for the hidden layer. This is because of the vanishing gradient problem, i.e., if your input is on a higher side (where sigmoid goes flat) then the gradient will be near zero.

## What is the output of an activation function?

Sigmoid or Logistic Activation Function The sigmoid function is a logistic function and the output is ranging between 0 and 1. The output of the activation function is always going to be in range (0,1) compared to (-inf, inf) of linear function. It is non-linear, continuously differentiable, monotonic, and has a fixed output range.

## Which is combination of loss and activation functions should be used?

The purpose of this post is to provide guidance on which combination of final-layer activation function and loss function should be used in a neural network depending on the business goal. This post assumes that the reader has knowledge of activation functions.

## How are activation functions different from linear functions?

The output of the activation function is always going to be in range (0,1) compared to (-inf, inf) of linear function. It is non-linear, continuously differentiable, monotonic, and has a fixed output range. But it is not zero centred. The function produces outputs in scale of [-1, 1] and it is a continuous function.

## Why are there different activations for different problems?

The reason why different activations exist is because they match different problems. Among a few others are mentioned by you “linear functions, sigmoid functions and softmax functions”: linear is an obvious choice for regression problems where you are predicting unbounded quantities, e.g. stock log returns.