0:00:00.134,0:00:02.916
So just to make life a little more complicated,

0:00:02.916,0:00:06.683
let's recall that we talked about things like true positives.

0:00:06.683,0:00:09.955
False positives and false negatives.

0:00:09.955,0:00:12.925
Notice I left out true negatives because Kate and

0:00:12.925,0:00:16.225
I couldn't quite agree what it would mean in this example.

0:00:16.225,0:00:19.744
But we can generalize that these, these three words, these three expressions to

0:00:19.744,0:00:22.805
a confusion matrix with more than two concepts positive and negative.

0:00:22.805,0:00:26.769
We have seven different concepts, as in this example over here.

0:00:26.769,0:00:29.400
Tell me for the concept, Tony Blair.

0:00:29.400,0:00:33.040
What you think is the number of true positives