How to set the "input_nodes " in HGTLoader? Two node types Heterogeneous Graph？Only one node type can be set in "input_nodes"

[jasmineChouLujie]

One node type is set as an example, how about two node types?

[rusty1s]

Yes, we currently only support a single input node type as "seed node" :( However, the the sampler will still sample neighbors of different node types.

[jasmineChouLujie]

Thank you. How can I handle two nodes type in HGT? 发自我的iPhone

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在 2024年2月6日，17:44，Matthias Fey ***@***.***> 写道：  Yes, we currently only support a single input node type as "seed node" :( — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.

[rusty1s]

HGTConv expects a dictionary of node types as features and a dictionary of edge types as graph structure. As such, it will perform heterogeneous message passing. If you are referring to HGTLoader, then the set of seed nodes is currently limited to a single node type.

[jasmineChouLujie]

Thank you for your help！ 发自我的iPhone

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在 2024年2月7日，20:39，Matthias Fey ***@***.***> 写道：  HGTConv expects a dictionary of node types as features and a dictionary of edge types as graph structure. As such, it will perform heterogeneous message passing. If you are referring to HGTLoader, then the set of seed nodes is currently limited to a single node type. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.

[jykr]

Why do the heterogeneous data loaders start only from a single type? I just need a data loader for all nodes and it isn't seem to be supported.... Any suggestions when I'm interested in all node types?

[rusty1s]

It is quite complicated to support data loading from different node types, since a mini-batch would hold seed nodes from different types, which is challenging to process downstream. While I agree this is a nice feature to have, it needs a principled design to not be overly confusing to use.