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Foundations of Artificial Intelligence & Machine Learning

Licence
OPEN CC-BY-4.0
Authors
Nidhi Sharma, Honey Singh, Ajay Sharma, Deepak Dagar
Published
2026-07-28 · Zenodo
Language
eng
Length
37166 words
Type
narrative text
Open ↗ Download Open original ↗
Evaluation Metrics for Regression Models

Regression algorithms predict continuous numerical values. Their performance is generally measured by calculating prediction errors. Mean Absolute Error (MAE) Mean Absolute Error measures the average difference between actual values and predicted values. Smaller MAE values indicate better prediction accuracy. MAE is simple and easy to interpret because it directly measures prediction error magnitude. Mean Squared Error (MSE) Mean Squared Error calculates the average squared difference between actual and predicted values. Because errors are squared, larger mistakes receive greater importance. MSE is widely used in Machine Learning optimization and model training. Evaluation Metrics for Classification Models Classification models predict categories or labels. Their performance is evaluated differently from regression models.