summary metrics of confusion matrix

To obtain summary metrics from a confusion matrix in the R programming language, you can follow these steps:

1. Calculate Accuracy: (TP + TN) / (TP + TN + FP + FN)
2. Calculate Error Rate: (FP + FN) / (TP + TN + FP + FN)
3. Calculate Precision: TP / (TP + FP)
4. Calculate Recall (Sensitivity): TP / (TP + FN)
5. Calculate Specificity: TN / (TN + FP)
6. Calculate F1 Score: 2 (Precision Recall) / (Precision + Recall)