Before revision:  Al-though imbalance problem has been extensivelystudied , the impact of imbalanced data on GCN-based linkage prediction task is quite different, which would cause problems in two aspects: im-balanced linkage labels and biased graph represen-tations .
After revision:  Although imbalance problem has been extensivelystudied , the impact of imbalanced data on GCN-based linkage prediction task is quite different, which would cause problems in two aspects: im-balanced linkage labels and biased graph represen-tations .