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fix the bug of average degree #51

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Merged
yifanfeng97 merged 1 commit into from
Mar 17, 2024
Merged

fix the bug of average degree #51

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fix the bug of average degree
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@HPUtx813
HPUtx813 committed Mar 7, 2024
commit ac69684c3802ca22ab8c30f8e92ba59a9db76ad4
4 changes: 3 additions & 1 deletion dhg/nn/convs/hypergraphs/unignn_conv.py
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Expand Up @@ -62,7 +62,9 @@ def forward(self, X: torch.Tensor, hg: Hypergraph) -> torch.Tensor:
# compute the special degree of hyperedges
_De = torch.zeros(hg.num_e, device=hg.device)
# scatter_reduce() is relay on the torch 1.12.1, which may be updated in the future
_De = _De.scatter_reduce(0, index=hg.v2e_dst, src=hg.D_v.clone()._values()[hg.v2e_src], reduce="mean")
_Dv = hg.D_v.clone()._values()[hg.v2e_src]
_De = _De.scatter_reduce(0, index=hg.v2e_dst, src=_Dv, reduce="sum") / _De.scatter_reduce(
0, index=hg.v2e_dst, src=(_Dv != 0).type_as(_De), reduce="sum")
_De = _De.pow(-0.5)
_De[_De.isinf()] = 1
Y = _De.view(-1, 1) * Y
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