KwickClips Artificial Intelligence · 43 sec · free
What is the F1 formula?
Short answer. 2PR / (P+R).
Recall with TP 30 and FN 20?
30/50 = 0.6.
Step by step
| Metric | Working | Value |
|---|---|---|
| Accuracy | 70/100 | 0.70 |
| Precision | 30/40 | 0.75 |
| Recall | 30/50 | 0.60 |
| F1 | 0.9/1.35 | 0.67 |
Remember
| F1 = 2PR / (P+R) |
One confusion matrix gives four scores. Let us calculate. Here are all four. Accuracy, seventy by hundred. Precision, thirty by forty. Recall, thirty by fifty. F1, about zero point six seven. F1 is two P R over P plus R.
This clip is from the full lesson: Model Evaluation Metrics: Confusion Matrix, Accuracy, Precision, Recall and F1 — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 10 Artificial Intelligence (417), CBSE Class 10 Artificial Intelligence (417), CBSE Class 10 Artificial Intelligence (417), CBSE Class 10 Artificial Intelligence (417)
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