From cbee7025f4237889b29bd26750a2f9e0b97325ac Mon Sep 17 00:00:00 2001
From: ben-jaynes <1btjaynes@gmail.com>
Date: Fri, 12 Jun 2026 18:50:43 -0700
Subject: [PATCH] vault backup: 2026-06-12 18:50:43

---
 Wiki/Machine Learning/Model Validation and Evaluation.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Wiki/Machine Learning/Model Validation and Evaluation.md b/Wiki/Machine Learning/Model Validation and Evaluation.md
index db89f5a..1d20a5c 100644
--- a/Wiki/Machine Learning/Model Validation and Evaluation.md	
+++ b/Wiki/Machine Learning/Model Validation and Evaluation.md	
@@ -79,4 +79,8 @@ The area under the ROC curve (AUC) represents the probability that given random
 ### Metric Usage
 There are many different factors that need to be taken into account when choosing a metric to use to evaluate a model.
 
-One of the biggest ones is whether the dataset is balanced or not. If the dataset is imbalanced accuracy is not a good metric as it can reward a model doing well on a majority class and poorly on a minority class. This is especially problematic in scenarios such as predicting a disease where false negatives are extremely detrimental.
\ No newline at end of file
+One of the biggest ones is whether the dataset is balanced or not. If the dataset is imbalanced accuracy is not a good metric as it can reward a model doing well on a majority class and poorly on a minority class. This is especially problematic in scenarios such as predicting a disease where false negatives are extremely detrimental.
+
+When the dataset is imbalanced other metrics such as precision and recall can be used. These can minimize false negatives or positives and give a better idea of how a model is performing on an imbalanced dataset.
+
+One of the best metrics to use with imbalanced data is F1 since it provides a balance between precision and recall. A F-score can also be tuned with $\beta$ to prioritize precision or recall while still giving a balance between the two. 
\ No newline at end of file