AI & Technology

What Is Machine Learning?

Machine learning is a branch of artificial intelligence in which computers learn patterns from data instead of being explicitly programmed for each task. A model is trained on examples, adjusts its internal parameters to reduce its errors, and can then make predictions or decisions about new data it has not seen before.

Main Types

Supervised learning trains on labeled examples, unsupervised learning finds structure in unlabeled data, and reinforcement learning learns from rewards and penalties.

Machine Learning and Statistics

Many machine learning methods build on statistical ideas such as averages, variance, correlation, and regression, which is why these concepts appear throughout the field.

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Last updated: September 29, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.