LightGCN-PyTorch

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Numpy not installed error when running main.py

3

I'm trying to run the main.py as instructed in the Readme, however I keep getting the below error claiming numpy/ pandas in not installed. However, I have already installed the...

shahjaidev

Cannot generate sparse matrix for amazon-book dataset

2

Could you provide a pre_adj_mat.npt as other datasets?

dongliangcao

Data set

1

Are there any reference on how to generate the data set? Thanks a lot!

jl63

Hi! Can I use word embeddings for pretrained user&item weight?

1

I notice that the embedding_user and embedding_item are initialized by torch.nn.init.normal_, and there is a choice that whether we use pretrained weight or not. In my dataset, the recommendation results...

PeaXCD

Thanks your job. how to set is using L1 normalization at the left side only (i.e., LightGCN-L1-L)?

liushifu12138

An error when running on amazon-book

2

Hi! There's an error when running on the amazon-book dataset. The Python version is 3.8.12 . ``` cd code && python main.py --decay=1e-3 --lr=0.001 --layer=2 --seed=2020 --dataset="amazon-book" --topks="[20, 100, 300]"...

xiransong

Hi, In the example dataset (amazon, gowalla,...), all of the users in test data has interactions with at least one item. However, I am trying to implement on a problem...

Chunger-Lo

Why didn't you directly modify the code on NGCF? I did so, but the result was not that ideal.

1

**Following the descriptions of this paper, I try to carry out LightGCN directly based on NGCF model as follows:** ________________________________________________________________________________________________________ def forward(self, users, pos_items, neg_items, drop_flag=True): A_hat = self.sparse_mean_adj ego_embeddings...

gongkaiqi

对于数据集Gowalla，NGCF中的归一化邻接矩阵mean_adj和LightGCN中的归一化邻接矩阵pre_adj_mat并不相同：NGCF中某一行的各元素均相同且为归一化后的值，而LightGCN中的pre_adj_mat某一行的各元素是不相同的。 我想，是不是因为NGCF中聚合操作使用的是直接归一化的方法，而LightGCN中使用的是对称归一化的方法？

gongkaiqi

the results of loss are not the same with yours

1

hi, I run the lightgcn using the command you provided in readme file 'cd code && python main.py --decay=1e-4 --lr=0.001 --layer=3 --seed=2020 --dataset="gowalla" --topks="[20]" --recdim=64' However, my loss results in...

lyancynthia