Appendix: CGLB: BenchmarkTasksfor ContinualGraphLearning

Moreover, the 47-th class of Products-CL contains only one node, and cannot be split for training,validation,andtest. We provide the set of splitting used in our experiments onourGitHub pageasareference. Thentheselected model is also automatically evaluated on the testing set. Details on the usage can be found in our GitHubpage. The name of the hyper-parameters are consistent with the names in our code.