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Question 134 - MLS-C01 discussion

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A Machine Learning Specialist is building a logistic regression model that will predict whether or not a person will order a pizza. The Specialist is trying to build the optimal model with an ideal classification threshold.

What model evaluation technique should the Specialist use to understand how different classification thresholds will impact the model's performance?

A.
Receiver operating characteristic (ROC) curve
Answers
A.
Receiver operating characteristic (ROC) curve
B.
Misclassification rate
Answers
B.
Misclassification rate
C.
Root Mean Square Error (RM&)
Answers
C.
Root Mean Square Error (RM&)
D.
L1 norm
Answers
D.
L1 norm
Suggested answer: A

Explanation:

A receiver operating characteristic (ROC) curve is a model evaluation technique that can be used to understand how different classification thresholds will impact the model's performance. A ROC curve plots the true positive rate (TPR) against the false positive rate (FPR) for various values of the classification threshold. The TPR, also known as sensitivity or recall, is the proportion of positive instances that are correctly classified as positive. The FPR, also known as the fall-out, is the proportion of negative instances that are incorrectly classified as positive. A ROC curve can show the trade-off between the TPR and the FPR for different thresholds, and help the Machine Learning Specialist to select the optimal threshold that maximizes the TPR and minimizes the FPR. A ROC curve can also be used to compare the performance of different models by calculating the area under the curve (AUC), which is a measure of how well the model can distinguish between the positive and negative classes.A higher AUC indicates a better model

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asked 16/09/2024
michiel van de belt
39 questions
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