Machine Learning Fundamentals › Cross-Validation Techniques
What are common mistakes to avoid with Cross-Validation Techniques
IntermediateAnswer
A common mistake is applying cross validation after already tuning the model on the full dataset, which can still leak information and give overly confident results.
Real-world example A team building a disease prediction model uses five fold cross validation to make sure their reported accuracy is stable and not just the result of one favorable data split.