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Author Archives: Anonymous

Given this training data: Point A (2, 3): Class = Red Point…

Given this training data: Point A (2, 3): Class = Red Point B (5, 4): Class = Blue Point C (3, 2): Class = Red Point D (6, 5): Class = Blue A new point is at (4, 3). Using K=3, which class would KNN predict? Calculate the Euclidean distances to explain your answer.

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SMOTE creates ______ samples of the minority class.

SMOTE creates ______ samples of the minority class.

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In linear SVM, the coefficients are accessed via model._____…

In linear SVM, the coefficients are accessed via model.______[0]

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What does SMOTE do?

What does SMOTE do?

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What is the formula for a 95% confidence interval from CV?

What is the formula for a 95% confidence interval from CV?

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What is the difference between Gini impurity and entropy?

What is the difference between Gini impurity and entropy?

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When might Random Forest be preferred over XGBoost?

When might Random Forest be preferred over XGBoost?

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What does bagging primarily reduce?

What does bagging primarily reduce?

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What is the learning_rate parameter in gradient boosting?

What is the learning_rate parameter in gradient boosting?

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You deployed a fraud detection model 6 months ago. Initially…

You deployed a fraud detection model 6 months ago. Initially it had 95% precision, but now it has dropped to 75%. Explain two possible types of drift that could cause this degradation. What steps would you take to diagnose and address the issue?

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