Beginner · Data
Ground truth
Visual diagram · (in preparation) · Math · (in preparation) · Worked example · 3 difficulty levels.
TL;DR. The actual reality or outcome of a situation, used to assess model performance.
Technical Definition
The actual reality or outcome of a situation, used to assess model performance.
How it works
Ground truth represents the objective reality or the correct answer for a given problem, which is used to evaluate how accurate a machine learning model's predictions are. For example, if a model predicts whether a student will graduate, the ground truth is whether that student actually graduated. While ideal, ground truth can sometimes be imperfect or contain errors itself.
Related Concepts
- Evaluation — The process of measuring a model's quality or comparing different models.