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## What is Backpropagation?

Backpropagation is known as the backpropagation of errors. It is a kind of technical method that is used to train artificial neural networks rigorously. Artificial neural networks would be used to solve complicated problems that are otherwise tough for conventional computational methods to solve. The artificial neural network would gather information and learn from various sources to carry out the task and produce accurate output. Backpropagation would be used in the cases where there are huge chunks of input and output data yet is it difficult to correlate to the output.
This type of supervised learning method would make use of the delta rule and works only with specific datasets. The output that you get from the inputs would act as the training set for the artificial neural networks. Backpropagation is widely used in training the feed-forward network. The networks that make use of Backpropagation would not need any kind of feedback.
It can also be used to fine-tune the weights of the neural net with the obtained error rate from the preceding approach. When the weights are tuned precisely, it will reduce the error rate and make this model highly reliable. You can use this method to train the artificial neural network and at the same time calculate the gradient for the loss function respective to the weights of the network. The Backpropagation would transfer information and relate this data to the error that is produced by the model when you do the guesswork.
Working of Backpropagation
Backpropagation is a deep learning technique and is a unique approach that is used to train the artificial neural network. When the neural network is created, the random values are assigned in the form of weights. The user is not confirmed whether or not the weight values that are assigned are perfect for the model. The model would give an output that is totally different from that of the expected output and gives some error value.
If you want to generate the right output with no or minimal error, you must train the model with a dataset or parameters and keep on tracking its progress. The neural network has a close relationship with the error. When there is a change in the parameter, the error would also change. There is a delta rule that is used to change parameters in this model.
Different phases of Backpropagation
The Backpropagation learning would be carried out with the help of a particular algorithm. The algorithm comprises two different phases. The phase would act like a cycle and goes on until the performance of the neural network is excellent.
Forward propagation
In this phase, you will be feeding the training data with the help of a neural network so that the required output would be generated. The backward output that is generated is the second step and has deltas for every output along with the neurons that are hidden. This will propagate the activation of the output with the help of trading pattern targets.
Weight update
In this phase, there are two different steps that come into the picture. The output delta would be multiplied with the input activation to get the weight gradient. The gradient percentage would be removed from the weight. The ratio that is obtained would give you the learning rate that has an impact on the quality and speed at which learning happens. If the ratio is higher, then the neurons would learn briskly. If the ratio is low, there is high accuracy in the training. The gradient sign with which the weight is indicated can either be positive or negative. It shows the areas where there is a high error rate
Why use Backpropagation?
Backpropagation is widely used to train the neural network that is related to a specific dataset. The students who want to make their career in machine learning must be thorough with this algorithm. The professors would assign tasks related to this algorithm to measure their knowledge level on it. However, if you lack time or knowledge in writing the assignment, you can get in touch with our machine learning experts. They have ample experience and knowledge in writing simply too intricate tasks related to Backpropagation.

Few of the advantages of using Backpropagation include:
•    Simple, quick, and easy to write the program
•    Easy to tune the inputs and there are no other parameters involved
•    Highly flexible
•    Does not need to have knowledge of the neural network
•    Works efficiently
•    Does not require you to learn any new functions
Different types of Backpropagation network
There are two different kinds of Backpropagation used. These include:
Static Backpropagation
It is a type of network that would map the static input with the static output. This network is widely used to solve static classification issues such as optical character recognition. If you are finding it tough to write the assignment on this topic, you can seek the help of our experts. They write the assignment immaculately. More importantly, they revise the content as many times as you want and until you are happy with the output.
Recurrent Backpropagation
It is another type of network that is widely used in fixed-point learning. The activations are fed in the forward direction until the required value is attained. When there is an error, it is backpropagated. The difference between static and recurrent Backpropagation is that the static one would offer you immediate mapping while recurrent would not.
Various applications of Backpropagation

These are the applications where Backpropagation would be used widely include:
•    Neural network is rigorously trained to pronounce each word and sentence properly
•    Used in recognizing the speech
•    Used for facial recognition

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