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Accuracy

AI/ML Fundamentals

Percentage of correct predictions

What is Accuracy?

Ratio of correct predictions to total predictions. Simple but can be misleading with imbalanced data.

Real-World Examples

  • •90% accuracy = 90 correct out of 100 predictions
  • •Email filter with 95% accuracy

Common Mistakes to Avoid

Using accuracy alone for imbalanced datasets (e.g., 99% non-fraud transactions)

Related Terms

Learn more about concepts related to Accuracy

Precision

Of predicted positives, how many are actually positive

Recall (Sensitivity)

Of actual positives, how many did we find

F1 Score

Harmonic mean of precision and recall