Creating hierarchical graph

[ZikangZhou]

Hi,

I want to create hierarchical graphs, i.e., graphs of subgraphs. In my application, each individual training sample is a graph consisting of N subgraphs (N can be different in different training samples), and each subgraph consists of M nodes (also, M is not a constant). What is the suggested way to implement such data structure? Should I create "batch of batches" utilizing Batch.from_data_list(List[Batch])?

The above example is a 2-level hierarchy. What if there are more levels? Would "batch of batches of batches" work? Thank you very much.