CSC $4740/6740$

Data mining

The data tuples of Table $1$ are sorted by decreasing probability value, as returned by a classifier to be classified as positive. Assume we will use Prob. $=0\mathrm{.}55$ as a threshold to make the final decision: data tuples with Prob. $>=0\mathrm{.}55$ will be Positive, otherwise Negative.

a$.$ Compute the values for the number of true positives $($TP$),$ false positives $($FP$),$ true negatives $($TN$),$ and false negatives $($FN$),$ and Make the confusion table.

b$.$ Compute the accuracy, sensitivity $($TP Rate$)$ and specificity $($TN Rate$),$ precision and recall, and F$1$ score.