Feed-Forward Deep Learning (DL)

Feed-Forward Deep Learning (DL) Neural Network
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Updated 21 Oct 2023

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This code embodies a profound and intricate neural network that operates in a feed-forward manner, enabling it to make predictions based on input data with a high degree of accuracy. The network is composed of four hidden layers, each containing three neurons that work in unison to produce the desired output. The Adam optimizer is employed to facilitate the training process and enhance the network's performance. Additionally, the hidden layers utilize the "leaky-relu" activation function, which is known for its ability to improve training speed and reduce the likelihood of overfitting. The output layer, on the other hand, uses the "Softmax" activation function, which is commonly used in multi-class classification tasks to produce probabilities for each possible class.
Here's a more detailed explanation of Adam, leaky ReLU, and Softmax:
1. Adam:
Adam stands for Adaptive Moment Estimation and is an optimization algorithm commonly used in deep learning. It combines the benefits of two other optimization algorithms, momentum and RMSprop. Adam maintains an adaptive learning rate for each parameter, which allows it to adjust the learning rate based on the magnitude of the gradients. This adaptability makes Adam well-suited for a wide range of problems and helps it converge faster compared to traditional gradient descent algorithms. Adam also includes bias correction terms to account for initialization biases in the first and second moments of the gradients.
2. Leaky ReLU:
Leaky ReLU (Rectified Linear Unit) is an activation function used in neural networks. It is an improved version of the traditional ReLU function. The key difference is that Leaky ReLU allows small negative values when the input is less than zero, instead of setting them to zero as ReLU does. This small negative slope for negative inputs helps address the "dying ReLU" problem, where neurons can become unresponsive during training. By allowing a small negative slope, Leaky ReLU helps prevent this issue and allows for better gradient flow during backpropagation.
3. Softmax:
Softmax is an activation function commonly used in the output layer of neural networks for multi-class classification problems. It transforms the outputs of the previous layer into a probability distribution over multiple classes. Softmax ensures that the sum of the probabilities for all classes is equal to 1, making it suitable for tasks where the output needs to represent class probabilities. The Softmax function takes the exponential of each output value and divides it by the sum of exponentials across all classes. This normalization process ensures that the output values represent probabilities that can be interpreted as the likelihood of each class.
These techniques, Adam optimization, leaky ReLU activation, and Softmax activation, are widely used in deep learning to enhance training efficiency, address common issues like vanishing gradients or unresponsiveness, and produce meaningful probability distributions for classification tasks.

Cite As

Mehdi Ghasri (2024). Feed-Forward Deep Learning (DL) (https://www.mathworks.com/matlabcentral/fileexchange/137961-feed-forward-deep-learning-dl), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2023b
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Version Published Release Notes
1.0.0