opening fridge action so you go to the fridge you extend your hand you pull on the fridge door you open the fridge and then you close it right and you want to recognize other actions that are opening fridge actions okay if you run a classifier for this task you label a whole bunch of opening the fridge actions as positives and then others as negatives you train your network and then if you look at what the performance is great by the way the performance is very very good but if you look at which frames did the classifier actually pay