You have trained a logistic regression classifier and planned to make predictions according to: Predict y=1 if he (x) 2 threshold Predict y=0 if he (x) < threshold For different threshold values, you get different values of precision (P) and recall (R). Which of the following is a reasonable way to pick the threshold value?
You have trained a logistic regression classifier and planned to make predictions according to: Predict y=1 if he (x) 2 threshold Predict y=0 if he (x) < threshold For different threshold values, you get different values of precision (P) and recall (R). Which of the following is a reasonable way to pick the threshold value?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Machine Learning

Transcribed Image Text:You have trained a logistic regression classifier and planned to make predictions
according to:
Predict y=1 if he(x) 2 threshold
Predict y=0 if he(x) < threshold
For different threshold values, you get different values of precision (P) and recall (R).
Which of the following is a reasonable way to pick the threshold value?
Oa.
Measure precision (P) and recall (R) on the test set and choose the value of
P+R
threshold which maximizes
2
O b.
Measure precision (P) and recall (R) on the cross validation set and choose the
PR
value of threshold which maximizes 2
P+R
Oc.
Measure precision (P) and recall (R) on the test set and choose the value of
PR
threshold which maximizes 2
P+R
O d.
Measure precision (P) and recall (R) on the cross validation set and choose the
P+R
value of threshold which maximizes
2
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