The decision threshold
The filter has scored every email. How sure must it be before one goes to the spam folder?
Twenty emails arrive already scored by a spam filter, five of them spam, and two good ones score higher than two of the spams. One dial sets how sure the filter must be before an email goes to the spam folder. Watch precision, recall and false alarms per 1,000 good emails pull against each other.
Board: How Do You Know It's Good →A score line, three panels and two sliders. On a narrow screen the panels stack.
try this Drag How sure before it goes to the spam folder from 0.90 down to 0.20 and watch false alarms per 1,000 good emails climb.
Included with a plan
This lab is included with a plan. The first three lessons of every track are free, with their boards and videos. A plan unlocks every lesson, board, video, lab and paper for one price.