What is the purpose of the confusion matrix?

Practice Questions

Q1
What is the purpose of the confusion matrix?
  1. To visualize the performance of a classification model
  2. To calculate the accuracy of a regression model
  3. To determine feature importance
  4. To optimize hyperparameters

Questions & Step-by-Step Solutions

What is the purpose of the confusion matrix?
  • Step 1: Understand that a confusion matrix is a table used to evaluate the performance of a classification model.
  • Step 2: Know that it shows four important values: true positives, false positives, true negatives, and false negatives.
  • Step 3: True positives are the cases where the model correctly predicts the positive class.
  • Step 4: False positives are the cases where the model incorrectly predicts the positive class when it is actually negative.
  • Step 5: True negatives are the cases where the model correctly predicts the negative class.
  • Step 6: False negatives are the cases where the model incorrectly predicts the negative class when it is actually positive.
  • Step 7: By analyzing these values, you can understand how well your model is performing.
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