Helpful and easy to understand guides for machine learning metrics.

## Regression machine learning metrics

What is a good MSE score?

What is a good RMSE value?

What is a good MAE score?

What is a good R2 score?

What is a good MAPE score?

How to calculate MAPE with 0 values

What is MDAPE and how do I calculate it in Python?

Can percent error be negative?

### Regression metric comparisons

RMSE vs MAE, which should I use?

RMSE vs MSE, what's the difference?

MAE vs MAPE, which is best?

RMSE vs MAPE, which is the best regression metric?

MSE vs MAE, which is the better regression metric?

### Regression metric calculators

MSE calculator

RMSE calculator

MAPE calculator

MAE calculator

R squared calculator

Coefficient of determination calculator

## Classification machine learning metrics

What is a good F1 score?

What is a good ROC AUC score?

What is a good accuracy score in machine learning?

Balanced accuracy for machine learning

### Classification metrics comparisons

AUC vs accuracy, which is the best metric?

Accuracy vs balanced accuracy, which is the best metric?

F1 score vs AUC, which is the best classification metric?

F1 score vs accuracy, which is the best classification metric?

Micro vs Macro F1 score, what’s the difference?

### Classification metric calculators

F1 score calculator

Accuracy calculator

Precision recall calculator

Confusion matrix calculator

Confusion matrix maker

## Metric advice when creating machine learning models

What is a baseline machine learning model?

What is a good performance metric for clustering algorithms?

What is the best classification metric for imbalanced data?

## Loss and cost functions

L1 loss function

L2 loss function

L1 vs L2 loss functions

Loss function vs cost function, what’s the difference?

## Model validation

Using cross_val_score in sklearn

Using cross_validate in sklearn

Difference between cross_val_score and cross_validate