hkuds / autost

[WWW'2023] "AutoST: Automated Spatio-Temporal Graph Contrastive Learning"

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autost's Issues

How to construct the trajectory-based region graph?

I do not seem to find the corresponding code in file pre_spatial_graph.py.

Question about POI Context Embedding Layer

Dear Authors,

Thanks for your WWW23 paper.
I noticed that in Section 3.1 POI Context Embedding Layer of your paper, you mentioned using the skip-gram model.
I was curious how do your apply it to region POI vectors.
So I looked at your source code: pre_poi_transformer.py # obatining the features of nodes by Transformer and Skip-gram
and found that it only covers nn.Embedding.

Did I missed something? Could you please help me understand the issue? I would greatly appreciate any assistance you can provide. Thank you so much.

Best,
Chuang Yang