About the combination part

[namenotexist]

[namenotexist]

this fomular seems not appeared in your code

[PeiJieSun]

In diffnet.py line 111, we simply this operation with add operation when we implement this model. But you can also modify the add operation to this one, maybe it will cost you some time to tune the parameters. Thank you for paying attention to our work.

[namenotexist]

Thanks replying. I think you must have been do some experiment comparing this two aggregation method, do you have some insight about the advantage and disadvantage about these two method

[PeiJieSun]

Yeah, I think the add operation is very easy to implement, and it can do help you keep all input information, but the concatenate operation seems not effective when keeping the input information, that's also the reason I select add operation in the experiment. But as you know, the written about the model should be interesting and sometimes complicated. But if you implement this model, I think add operation may be the better choice.