Evaluation metrics and uncertainty · MLD-0925
Precision
The fraction of predicted positive cases that are truly positive.
Original reference page · detailed expansion pending. Original definitions, examples, notes and citations are preserved below. New examples are illustrative, not benchmark results.
Original example
Measure how many alerts are correct.
Original caveat
Precision changes with class prevalence and decision threshold.
Context and aliases
Level: Foundational. Stages: Evaluation · Research.
Tags: ML · DL · SLM · LLM.
Aliases: Positive predictive value · PPV.
Related concepts
Concepts linking here
Original references
- scikit-learn: cross-validation ↗ · Reference link
- Google Machine Learning Glossary ↗ · Consulted
- scikit-learn: evaluation metrics ↗ · Reference link
- Original reference URL ↗