A neural network is a type of machine learning model that is inspired by the structure and function of biological neural networks. It consists of interconnected units called neurons that transmit information to each other.
The neural network is composed of multiple layers. The input layer receives the initial data, which is then processed through a series of hidden layers. Each hidden layer consists of multiple neurons that perform computations on the data. Finally, the output layer produces the final result or prediction.
The neurons in a neural network are connected by weighted edges. These weights determine the strength or importance of the connection between neurons. During training, the neural network adjusts these weights to optimize its performance. This process is typically done using a technique called backpropagation, where the network learns from its mistakes by comparing its output to the correct answer.
Neural networks are capable of learning and generalizing from examples, making them widely used for tasks such as image and speech recognition, natural language processing, and predictive modeling. They can handle complex and nonlinear relationships in data, making them a powerful tool for solving complex problems. However, neural networks require large amounts of training data and can be computationally expensive to train.