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3 cards from this section. Quick, good the night before a test.
What does a confusion matrix display?
Think about the terms related to classification accuracy.
Why is cross-validation important when training a model?
Consider what might happen if we only trained on one dataset.
What does a confusion matrix help to assess?
Consider what it breaks down in terms of actual and predicted values.
True or False: Cross-validation improves the accuracy of the final model.
Think about how many times the model trains.
Create a detailed confusion matrix for a model that predicts whether a patient has a disease based on symptoms, providing a hypothetical dataset's true and predicted values. Calculate and interpret accuracy, precision, and recall.
Remember to establish the numbers based on logical assumptions concerning the dataset.
Design an experiment using cross-validation on a dataset of your choice, outlining how you would structure the dataset and the number of folds. Discuss potential biases and their impact.
Consider how overfitting could mislead the outcomes if not addressed with proper folds.
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