In artificial intelligence, machine learning is a method of data analysis that automates analytical model building. It is a branch of artificial intelligence based on the idea that systems can learn from data, identify patterns and make decisions with minimal human intervention.

A neural network (or "neural net") is a system which models an animal brain.

Neural nets are used in machine learning algorithms to perform tasks like

• Image recognition, for example, to identify persons.
• Sales forecasting
• Data validation
• Risk management
• Filtering of spam e-mails
• Anomaly detection in data
• Credit card fraud detection
• Natural language understanding
• Handwriting recognition

Supervised learning

Unsuprevised learning

Reenforcement learning