AI Glossary
Training data
What is Training data?
The dataset used to train an AI model. The quality, scale, and diversity of training data heavily influence model capability and biases. Modern frontier models are trained on trillions of tokens drawn from the web, books, code, scientific papers, and other sources.
Example in practice
When a frontier model underperforms on medical terminology, it typically signals that medical literature was underrepresented in its training data relative to the volume of general web content.
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See Training data applied in a professional context through this free course.
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