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A neural network is a computational model inspired by the way biological neural networks in the human brain work. It is a type of machine learning algorithm that attempts to mimic the learning and decisionmaking processes of the human brain. Neural networks consist of interconnected nodes, often referred to as neurons or artificial neurons, organized into layers.
The basic components of a neural network include:

Neurons (Nodes): Neurons are the basic computational units in a neural network. Each neuron receives input, processes it using a mathematical function, and produces an output.

Layers: Neurons are organized into layers. The three main types of layers are:
 Input Layer: The layer that receives the initial input data.
 Hidden Layers: Intermediate layers between the input and output layers. These layers are responsible for learning complex patterns and representations in the data.
 Output Layer: The final layer that produces the model's output or prediction.

Weights and Biases: Connections between neurons are represented by weights, and each neuron has an associated bias. These parameters are adjusted during the training process to enable the network to make accurate predictions.

Activation Function: Each neuron typically applies an activation function to the weighted sum of its inputs. Common activation functions include sigmoid, hyperbolic tangent (tanh), and rectified linear unit (ReLU).

Training Algorithm: Neural networks learn from data through a training process. During training, the network adjusts its weights and biases based on the input data and the desired output. This is often done using optimization algorithms like gradient descent.
The process of training a neural network involves presenting it with a labeled dataset, comparing its predictions to the actual labels, and updating the model's parameters to minimize the difference between predicted and actual outcomes. This iterative learning process allows neural networks to capture complex relationships within the data and generalize to make predictions on new, unseen data.