Modern Scala Projects

Generating the best error term and best F1 measure

In this section, we want to come up with the number of false positives, the number of true positives, and the number of false negatives. First, we want to know how many false positives there are: 

val fPs = positivesNegatives(labelAndPredictions, 0.0, 1.0)println("No of false negatives is: " + fPs)

Now, we want to know how many true positives there are:

val tPs = positivesNegatives(labelAndPredictions, 1.0, 1.0)

We also want to know how many false negatives exist:

val fNs = positivesNegatives(labelAndPredictions, 1.0, 0.0)

Now that we have fNs, tPs, and fPs, we can calculate the precision and recall metrics.