multiple edges modification

[cxw-droid]

Hi, it seems the code only modifies one edge per graph. Is there a simpler way to change the code to multiple edges modification? I have not found a parameter in the code to control the edge budget. Thanks.

[Hanjun-Dai]

When you construct the environment you have the choice of maximum number of edges to modify:

https://github.com/Hanjun-Dai/graph_adversarial_attack/blob/master/code/graph_attack/rl_common.py#L35

[cxw-droid]

Thank you for the reply.

I tried to modify the code to n_edges=2 or n_edges=3 here:

graph_adversarial_attack/code/graph_attack/dqn.py

Line 173 in f2aaad7

env = GraphEdgeEnv(base_classifier, n_edges = 1)

I also add one line time_t = time_t % 2 before this line:

graph_adversarial_attack/code/graph_attack/q_net.py

Line 172 in f2aaad7

assert time_t >= 0 and time_t < self.num_steps

When modifying 2 edges, the results are similar to modifying 1 edge. When modifying 3 edges, the acc drops to about 0.61 then rises to 0.9, even worse than modifying only one edge. It seems more code modification is needed?