Detected Activities Precision Recall F-Score Number of Samples for Transfer Learning Person Count 0.77 0.91 0.83 834 Doorknob 0.89 0.73 0.80 621 Touching with Hand 0.82 0.71 0.76 633 Coughing 0.84 0.82 0.83 603 Hugging 0.96 0.61 0.74 634 Hand Shaking 0.73 0.58 0.78 608