Recurrent Neural Networks

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Recurrent Neural Networks - Introduction to RNN







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question, so if the RNN is feed forward NN facing backward then isn't that a backpropogation NN?

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Hi Suel, there seems to be a slight confusion in your terminology. Let's clarify the terms:

1. Feedforward Neural Network (FNN): This is a traditional neural network where information travels in one direction—from the input layer through the hidden layers to the output layer. There's no feedback loop, and it's used for tasks like classification and regression.

2. Recurrent Neural Network (RNN): This type of neural network has connections that form a directed cycle, allowing information to be retained and processed over time. Unlike feedforward networks, RNNs can be thought of as having a form of memory.

3. Backpropagation: This is an optimization algorithm used for training neural networks. It involves both forward propagation (where input data is passed through the network to generate predictions) and backward propagation (where the error is calculated and the weights are adjusted to minimize this error).

Now, to address your question, the terms "feedforward" and "backpropagation" are not directly related to each other in the way you've framed them.

- Feedforward vs. Backward: Feedforward refers to the flow of data from input to output, while backward usually refers to the process of backpropagation during training. In the context of training a neural network, you have both forward and backward passes. The forward pass involves making predictions, and the backward pass involves updating the model's parameters based on the error.

- Feedforward vs. Recurrent: Feedforward networks don't have cycles in their connections, while recurrent networks do, allowing them to process sequential data over time.

- Backpropagation in RNNs: Backpropagation is used to train RNNs just as it is used for FNNs. The key difference in RNNs is that backpropagation is extended through time due to the temporal nature of the network. This is often called backpropagation through time (BPTT).

In summary, an RNN can be considered a type of neural network that has feedback connections allowing it to handle sequential data, and backpropagation is the training algorithm used for adjusting its parameters. It's not accurate to say an RNN is a "feedforward network facing backward." They are distinct architectures with different capabilities.

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Thank you for updating the course. Happy to see the course content and new projects!

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