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Machine Learning

Machine Learning

Also known as: ML

Reviewed by Glintr Learn ReviewersUpdated 5 min readArea: Machine Learning
Quick Answer

What is Machine Learning?

Machine Learning is a branch of AI where systems learn patterns from data instead of following fixed rules.

Definition

Machine Learning (ML) is the branch of Artificial Intelligence where models learn from data — training on examples to make predictions or decisions. It powers recommendations, fraud detection, forecasting and the underlying training of large language models.

In technical terms

Machine Learning includes supervised, unsupervised and reinforcement learning. Models are trained by minimising a loss function over a dataset, typically using gradient descent, and evaluated on held-out data.

Real-world examples

  • Netflix recommending shows based on your watch history.
  • A bank flagging an unusual credit card transaction.
  • Predicting house prices from square footage and location.

Common mistakes

  • Confusing correlation with causation in model outputs.
  • Training on biased data and expecting fair predictions.
  • Skipping evaluation and shipping a model that fails on new data.
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