Before revision:  Experimental results demonstrate that the proposed adversarial immunization method remarkably improves the fraction of robust nodes by 14\%-50\%, with an affordable immune budget of only 3.2 \% edges.
After revision:  Experimental results demonstrate that the proposed adversarial immunization method remarkably improves the fraction of robust nodes by 14\%-50\%, with an affordable immune budget of only 5 \% edges.