Decision Trees are a supervised learning algorithm used for classification and regression tasks. They are not a type of Deep Learning model.

The primary goal of Deep Learning is to learn patterns from data. This allows Deep Learning models to make predictions, optimize decision-making, and solve complex mathematical problems.

ReLU (Rectified Linear Unit) is a commonly used activation function in Deep Learning models. It is simple to compute and helps prevent the vanishing gradient problem.

Backpropagation is the process of adjusting the weights and biases of a Deep Learning model to minimize the loss function. It involves propagating the error backward through the network.

Dropout is a regularization technique used to prevent overfitting in Deep Learning models. It involves randomly dropping out neurons during training to reduce the reliance on specific features.

The purpose of a convolutional layer in a CNN is to extract features from an input image. This is done by applying a convolution operation, which involves sliding a filter over the input image and computing the dot product at each location.

Recurrent Neural Networks (RNNs) are commonly used for natural language processing tasks. They are able to learn from sequential data, such as text, and make predictions based on this data.

The purpose of a pooling layer in a CNN is to reduce the dimensionality of an input image. This is done by applying a pooling operation, which involves combining multiple values in the input image into a single value.

Generative Adversarial Networks (GANs) are used to generate realistic images from random noise. They consist of two networks, a generator and a discriminator, that compete against each other to produce realistic images.

Transfer Learning is the process of fine-tuning a pre-trained Deep Learning model on a new dataset. This allows the model to leverage the knowledge it has learned from the previous dataset to learn the new task more quickly.

Convolutional Neural Networks (CNNs) are commonly used for object detection tasks. They are able to learn the features of different objects in an image and identify their locations.

The purpose of a fully connected layer in a Deep Learning model is to classify an input image. This is done by computing the dot product between the output of the previous layer and a weight matrix, and then applying an activation function.

Recurrent Neural Networks (RNNs) are commonly used for speech recognition tasks. They are able to learn the patterns in speech data and recognize spoken words.

The purpose of a softmax layer in a Deep Learning model is to classify an input image. It takes the output of the previous layer and converts it into a probability distribution over the different classes.

Recurrent Neural Networks (RNNs) are commonly used for machine translation tasks. They are able to learn the patterns in different languages and translate text from one language to another.