Problem in Gesture recognition WITHOUT NULL class

[kshitij3199]

Hi @fjordonez @sussexwearlab,
I am implementing the DeepConvLSTM code in Keras, I have got 89% f1 score for Task B( Gesture recognition with NULL class). But I am not getting expected f1 score in Task B (Gesture recognition WITHOUT NULL class). I have a few questions

1. For Gesture recognition WITHOUT NULL class, do we have to delete all the NULL class data and pass 17 in class number? But After deleting, the data is very less. so the f1 score is coming less

2. Or do we have to train the model on data with NULL class data and test it on data (after removing NULL class)
   or any other method to increase f1 score in Task B (Gesture recognition WITHOUT NULL class)

Thankyou