What does the term 'feature importance' refer to in the context of Random Forest

What does the term 'feature importance' refer to in the context of Random Forests?

What does the term 'feature importance' refer to in the context of Random Forests?

Step 1: Understand that a 'feature' is a piece of information used to make predictions in a model.
Step 2: Recognize that 'feature importance' measures how much each feature helps the model make accurate predictions.
Step 3: In Random Forests, the model uses many decision trees to make predictions.
Step 4: Each decision tree looks at different features to make decisions.
Step 5: Feature importance is calculated by seeing how much each feature improves the predictions across all the trees.
Step 6: Features that improve predictions a lot are considered more important than those that do not.

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