Confusion Matrix
مصفوفة الالتباس
A confusion matrix is the N×N grid that breaks classifier predictions into true positives, true negatives, false positives, and false negatives per class. Reading rows reveals what the model gets right; reading columns exposes which classes it confuses. For PPE detection the typical confusion is hard-hat vs. construction-cap, and reflective-vest…
Definition
A confusion matrix is the N×N grid that breaks classifier predictions into true positives, true negatives, false positives, and false negatives per class. Reading rows reveals what the model gets right; reading columns exposes which classes it confuses. For PPE detection the typical confusion is hard-hat vs. construction-cap, and reflective-vest vs. high-vis jacket. FI Tech ships per-deployment confusion matrices in monthly QA reports so HSE managers can see exactly which class needs more annotated samples. It is the single most useful debugging tool when a deployed model drifts.
