· Xiaojing Yang · Machine Learning
Metrics Beyond Accuracy
Accuracy is easy to understand, but often wrong for imbalanced, ranked, or cost-sensitive tasks.
Accuracy is easy to understand, but often wrong for imbalanced, ranked, or cost-sensitive tasks.
Model selection is the disciplined process of choosing among models without fooling yourself.
How models learn noise, how validation curves reveal it, and how regularization controls it.
Why preprocessing belongs inside the validation pipeline, not before the split.
A practical guide to splitting data so model evaluation stays honest.
Statistics is not just a set of formulas. It is a way to reason about uncertainty, evidence, and trust in AI experiments.